This is an action to set aside a certificate of sale issued by the sheriff of Stark county to the defendants for a tract of land purchased by them upon an execution sale. The case was submitted upon a stipulated statement of facts. The material facts are: On August 30, 1909, Bobert O’Connor became the owner in fee of the premises involved herein by virtue of a patent issued to him on that day by the United States government. The patent was recorded in the office of the register of deeds on May 11, 1910, and the record title to the premises remained in said Bobert O’Connor until November 5, 1915. The defendants obtained a judgment against said Bobert O’Con-nor, which was duly docketed in the office of the clerk of the district court of Stark county on October 1, 1915. Execution was issued upon the judgment, and, on October 20, 1915, the sheriff duly levied upon the premises involved herein, and caused to be filed for record in the office of the register of deeds of said county, a notice of levy as provided by law. The sheriff advertised the premises for sale, and on November 29, 1915, sold the same to the defendants for the full amount due upon the judgment, including interest, and costs. The levy, notice of sale, and sale were in all things made, given, and conducted according to law. The proper certificate of sale was issued to the defendants, and recorded in the office of the register of deeds of said county on November 30, 1915. No redemption was made. Bobert O’Connor *331was a single man. The land was vacant and wholly unoccupied at the time defendants commenced the action on which their judgment was obtained, and so remained until after the execution sale. On August 7, 1915, the said Robert O’Connor executed and delivered to the plaintiffs a warranty deed for said premises, but the deed was not recorded until November 5, 1915. And at the time of the levy under the execution, “the apparent title in and to said premises, as shown of record in the office of the register of deeds of said Start county, was in said Robert O’Connor.”
Upon these facts, as stipulated, the trial court made findings of fact in favor of the defendants sustaining the validity of the said certificate of execution sale, and the title based thereon. The plaintiffs appeal from the judgment and assail the correctness of the conclusions of law drawn by the trial court from the facts found.
Our statute provides: “Every conveyance by deed, mortgage or other-
wise, of real estate within this state, shall be recorded in the office of the register of deeds of the county where such real estate is situated, and every such conveyance not so recorded shall be void as against any subsequent purchaser in good faith, and for a valuable consideration, of the same real estate, or any part or portion thereof, whose conveyance whether in the form of a warranty deed or deed of bargain and sale, deed of quit claim and release, of the form in common use or otherwise, is first duly recorded; or as against any attachment levied thereon or any judgment lawfully obtained, at the suit of any party, against the 'person in whose name the title to such land appears of record, prior to the recording of such conveyance ” Comp. Laws 1913, § 5591.
This statute clearly places judgments on par with deeds and mortgages. It makes every unrecorded conveyance “by deed, mortgage, or otherwise,” void as against the lien of a judgment lawfully obtained and docketed against the record owner, by a judgment creditor who has no actual knowledge or notice of the unrecorded conveyance. And title based upon a sale legally held under an execution issued upon such judgment is valid as against an unrecorded deed of which the judgment creditor and purchaser had no notice. Not only do the plain words of the statute say so, but this court has several times declared that to be the meaning and effect of the statute. See Enderlin Invest. Co. v. Nordhagen, 18 N. D. 517, 123 N. W. 390; Nordhagen v. Enderlin *332Invest. Co. 21 N. D. 25, 129 N. W. 1024; Ildvedsen v. First State Bank, 24 N. D. 227, 139 N. W. 105; Mott v. Holbrook, 28 N. D. 251, 148 N. W. 1061.
Plaintiff also contends tbat tbe statute is unconstitutional. This, question was not raised in tbe court below, nor bas appellant supported tbis contention to any extent by argument, or pointed out with any degree of particularity wherein it is claimed tbat tbe statute violates any provision of either tbe state or Federal Constitution. It is a. general rule supported by tbe unanimous weight of authority, tbat the constitutionality of a statute cannot be first questioned on appeal in a civil action. 3 C. J. § 608, p. 710; 6 R. C. L. p. 95, § 96. It is equally well settled tbat be who declares a statute to be unconstitutional bas tbe burden of showing tbat such constitutionality exists,, and should point to tbe particular constitutional provision violated. State ex rel. Linde v. Taylor, 33 N. D. 76, 86, L.R.A.1918B, 156, 156 N. W. 561.
Tbe question of constitutionality bas, however, been raised by a dissenting member of tbis court. It is contended by such members (1) Tbat tbe statute was not passed in a constitutional manner; and (2) tbat it is in conflict with tbe 14th Amendment to tbe Constitution, of tbe United States, for tbe reason tbat it deprives persons of property without due process of law.
While it is tbe duty of tbe judiciary, when required in tbe regular course of judicial proceedings, to declare void any act which violates tbe Constitution, it will not do to make of tbe courts “a sort of superior upper bouse to consider and pass, in general and particular as well, upon legislative enactments.” Wadhams Oil Co. v. Tracy, 141 Wis. 150, 123 N. W. 785, 18 Ann. Cas. 779. Tbe power to revoke or repeal a statute is not judicial in its character, and tbe courts ought not to pass on tbe question of constitutionality of a statute abstractly, but only as it applies and is sought to be enforced in tbe government of a particular case before tbe court. 6 R. C. L. p. 90. A statute is presumed to be constitutional. Tbis presumption becomes conclusive unless it is clearly shown tbat tbe enactment is prohibited by tbe Constitution of the state or of the United States. State ex rel. Linde v. Taylor, supra.
Tbe statute under consideration bas been authenticated by, and bas *333received the approval of, two of the three great co-ordinate departments of the state government. It is well to remember that the responsibility •of upholding the Constitution does not rest upon the courts alone; that the members of the legislature and the governor are required to take an oath to support the Constitution; and that the presumption is that they have obeyed this oath, and observed the constitutional requirements. 6 R. C. L. p. 101.
“Courts will not assume to pass upon constitutional questions unless properly before them, and the constitutionality of a statute will not be •considered and determined by the courts as a hypothetical question. It is only when a decision on its validity is necessary to the determination of the cause that the same will be made, and not then at the instance of a stranger, but only on the complaint of those with the requisite interest. These principles have been recognized by the ■Supreme Court of the United States. That tribunal has announced that it rigidly adheres to the rule never to anticipate a question of ■constitutional law in advance of the necessity of deciding it, never to formulate a rule of constitutional law broader than is required by the precise facts to which it is to be applied, and never to consider the ■constitutionality of state legislation unless it is imperatively required.” 6 R. C. L. pp. 76, 77.
We are aware of no instance where a court has, of its own volition, .gone outside of the record to search for reasons for annulling a statute. On the contrary the courts have recognized it to be their primary duty ■to construe statutes with reference to the Constitution (Escambia County v. Pilot Comrs. 52 Fla. 197, 120 Am. St. Rep. 196, 42 So. 697) ; that the power to pass upon the constitutionality of laws, even when the question arises in the course of ordinary litigation, is one to be exercised with the greatest possible caution and wisdom (State ex rel. Bolens v. Frear, 148 Wis. 456, L.R.A.1915B, 569, 134 N. W. 673, 135 N. W. 164, Ann. Cas. 1913A, 1147) ; and that the courts should not conjure up theories to overturn and overthrow the solemn declarations of the legislative body. State ex rel. Shepard v. Superior Ct. 60 Wash. 370, 140 Am. St. Rep. 925, 111 Pac. 233, but should •resolve every reasonable doubt in favor of their validity. (6 R. C. L. pp- 97, 98.)
While we do not deem the question of constitutionality before us, *334we deem it proper to observe tbat tbe system of registration of conveyances has been in operation in this country from its earliest history. It was in general use in tbe colonies, and prevailed in New England from its earliest settlement. Webb, Record of Title, § 3. It may,, indeed, be said that our whole system of land titles and conveyances bas, during tbe entire period of our national existence, “rested upon tbe plan and policy of registration.” Webb, Record of Title, § 3; 24 Am. & Eng. Enc. Raw, 76. Tbe constitutional power of a legislature to enact recording acts bas seldom been questioned. Sucb power was expressly sustained by tbe Supreme Court of tbe United States in tbe case of Jackson ex dem. Ilart v. Rampbire, 3 Pet. 280, 7 R. ed. 679, decided in 1830. In tbe opinion in that case tbe court said: “It is witbin tbe undoubted' power of state legislatures to pass recording acts, by wbicb tbe elder grantee shall be postponed to a younger, if tbe prior deed is not recorded witbin tbe limited time; and tbe power is. tbe same whether tbe deed is dated before or after tbe passage of the recording act. Though tbe effect of sucb a law is to render tbe prior deed fraudulent and void.against a subsequent purchaser, it is not a law impairing tbe obligation of contracts; sucb, too, is tbe power to pass acts of limitations, and their effect. Reasons of sound policy have led to tbe general adoption of laws of both descriptions, and their validity cannot be questioned. Tbe time and manner of their operation, tbe exceptions to them, and tbe acts from wbicb tbe time limited shall begin to run, will generally depend on tbe sound discretion of tbe legislature, according to tbe nature of tbe titles, tbe situation of tbe country, and tbe emergency wbicb leads to their enactment.” See also 6 Enc. U. S. Sup. Ct. Rep. 879; 10 Enc. U. S. Sup. Ct. Rep. 588. Tbe validity of recording acts as applied to judgments is universally recognized. Webb, Record of Title, §§ 198, 199; Pom. Eq. Jur. § 724; Black, Judgm. § 446; 23 Cyc. 1385. Webb (Webb, Record of Title, §■ 199) says: “Where tbe lien of tbe judgment bas attached and is held under tbe recording acts paramount to an unregistered conveyance, a. purchaser at a sale under tbe judgment will not be affected with notice,, unless tbe judgment creditor bad received notice before bis lien attached. Tbe purchaser bolds tbe land free from all sucb claims not of record, on tbe ground that when a right bas once been vested and made absolute,, it cannot be devested or defeated by any mere notice. Tbe policy of *335the recording acts requires this rule, as without it, the protection they afford could be taken away, and the lien devested by the subsequent acts of the party having an adverse claim by virtue of an unregistered conveyance.” Professor Pomeroy states the rule in substantially the same language. See 2 Pom. Eq. Jur. § 724.
Plaintiffs have filed a motion wherein we are asked to allow them to file an amended complaint, and to permit them to introduce certain evidence, and to remand the cause for the taking of such evidence. The motion is based solely upon the affidavit of one of plaintiffs’ attorneys to the effect that plaintiffs’ attorney, after the levy of the execution and prior to the sale of the premises, applied to the district judge for an order restraining the defendants and the sheriff from making sale under the execution, and at that time was informed by the judge that they had better permit the land to be sold and bring an action to set aside the sale. It is further averred that the trial judge, at the time the cause was submitted, informed plaintiffs’ attorneys that, in event he sustained the execution sale, he would later permit them to file briefs on the question of the right to redeem. The affidavit further avers that, in the event the cause is reopened, plaintiffs will offer evidence to show: (1) That the land at the time of the sale was worth not less than $15 per acre; (2) that the plaintiffs purchased the same from said Pobert Connor for a good, sufficient, and valuable consideration; and (3) that as a part of the purchase price plaintiffs executed and delivered to said Connor a mortgage, which it is averred was recorded in the office of the register of deeds of Stark county, on September 8, 1915, and constituted notice of the fact that Pobert Connor had conveyed his interest in the land to the defendants prior to the docketing of the judgment.
The record shows that this action was commenced in 1916, and that defendants’ answer was served on June 5, 1916. The stipulation of facts was signed on January 17, 1917. Judgment was entered and notice of entry served on March 7, 1917. No application was made, to the trial court to reopen the ease, in order to enable plaintiffs to introduce further evidence, and the affidavit submitted in support of the motion shows no reason whatever for the failure to make an appropriate application in the district court.
The motion papers do not indicate in what particular it is desired to *336amend the complaint. Nor is there any contention that the proposed ■evidence was not known to the plaintiffs and to their attorney before the cause was submitted in the court below. Counter affidavits submitted by the defendants contradict plaintiffs’ affidavit in most particulars.
In a proper case this court might possibly have authority to order a pleading amended to conform to the proof. And this court might qDrobably remand a cause so as to enable a party to make certain motions in the court below, but we are aware of no rule under which an appellate court can, in the first instance, properly entertain a motion to file an amended pleading or to reopen a cause for the introduction •of evidence. Motions of this kind should be made in the trial, and not in the appellate, court.
Nor is it apparent that the introduction of the proposed evidence would in any manner change the result. The recording acts apply to all conveyances; and the fact that the deed from Connor to the plaintiffs was supported by a valuable consideration would in no manner affect the result. It is undisputed that the plaintiffs knew of the proceedings under which defendants claimed title, even before a sale was made under the execution, and the sale was regularly held and in every respect conducted in the manner provided by law. There is no contention that there was any fraud. Under these circumstances a court ■cannot permit a redemption after the statutory period has expired. In this connection it may also be stated that the counter affidavits served by defendants preponderate on the question of the value of the land, and show the land to be worth only about $1,800, and that the amount of the outstanding encumbrances and taxes prior to the judgment under which defendants purchased, together with the amount of such judgment, amount to approximately the value of the land. It should be remembered that there is no contention that the defendants in this case had actual knowledge of the record of the mortgage from plaintiffs to Connor. On the contrary it is stipulated as an absolute fact that they had no actual knowledge or notice whatever. There is no contention that the stipulation of facts was erroneous, nor is any desire expressed to be relieved from the stipulation. The sole contention is that the mere record of the mortgage constituted sufficient notice to charge the defendants with knowledge of plaintiffs’ interest in the land.
*337The rule supported by the weight of authority is that “a record gives constructive notice only to persons in the same line of title, or, in other words, only to persons who must trace their title back through the same grantor.” 24 Am. & Eng. Enc. Law, 2d ed. 148. South Carolina has refused to apply this rule to a purchase-money mortgage from the grantee in an unrecorded mortgage. It has been said in an eminent legal work that the South Carolina court “went astray on this point,” and that it so held “apparently without due consideration.” See 24 Am. & Eng. Enc. Law, 2d ed. 149, 150, and note 2.
The overwhelming weight of authority is to the effect that “where land is conveyed by a deed which is not recorded, and the grantee gives a purchase-money mortgage back to the grantor, which is duly recorded, the record of such mortgage will not operate as constructive notice to a subsequent purchaser of the land from the grantor in the unrecorded deed.” 24 Am. & Eng. Enc. Law, 2d ed.149.
The supreme courts of South Dakota and Wyoming have held that record of an instrument out of the chain of title constitutes constructive notice. See Fullerton Lumber Co. v. Tinker, 22 S. D. 427, 118 N. W. 700, 18 Ann. Cas. 11; Balch v. Arnold, 9 Wyo. 17, 59 Pac. 434. These decisions are based on the ground that the reason for the rule, does not exist when the law requires the register of deeds to keep a numerical index of deeds, mortgages, or other instruments of record in his office, affecting or relating to the title to real property.
The system of numerical indexes was introduced during territorial days, and has been in operation in this state during the entire period of statehood. With such system in full operation this court, in Doran v. Dazey, 5 N. D. 167, 169, 57 Am. St. Rep. 550, 64 N. W. 1023, held that “the mere recording of an instrument out of the chain of the title will not, of itself, constitute constructive notice of such instrument, so as to bind one who deals with the apparent owner of the land according to the record, in ignorance of the existence of such instrument.” Doran v. Dazey, supra, was decided October 30, 1895. In 1899 the legislature adopted the rule announced in Doran v. Dazey, supra, and made the same part of the statutory law of this state. Laws 1899, chap. 167.
The statute then enacted has remained in force ever since. It reads: “An unrecorded instrument is valid as between the parties thereto and *338those who have notice thereof; but knowledge of the record of an instrur ment out of the chain of title does not constitute such noticeComp. Laws 1913, § 5598. The first clause of this statute had been in force since territorial days. See § 3297, Comp. Laws 1887. The second clause (which we have italicized) was added by the legislature in 1899. This legislative declaration is clearly at variance with and establishes a rule in this state contrary to that announced by the supreme courts of South Dakota and Wyoming.
It follows from what has been said above that the motion must be denied, and the judgment affirmed.
It is so ordered.