For I the Lord thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me; and showing mercy unto thousands of them that love me, and keep my commandments.

This is equivalent to a declaration that it is to him alone that we ought to adhere. And to urge us to it, he announces his power, which he permits none with impunity to despise or undervalue. For the Hebrew word El, which is here used for God, is expressive of strength. In the second place, he calls himself “a jealous God,” who can bear no rival. Thirdly, he declares that he will avenge his majesty and glory on those who transfer it to creatures or to graven images; and that not with the transient punishment of the original transgressors only, but of their posterity to the third and fourth generation; that is, of those who shall imitate the impiety of their fathers; as he also permanently displays his mercy and goodness, through a long line of posterity, to those who love him and keep his law. It is very common for God to assume the character of a husband to us; for the union, in which he connects us with himself, when he receives us into the bosom of his Church, bears a resemblance to the sacred conjugal relation, which requires to be supported by mutual fidelity. As he performs towards us all the duties of a true and faithful husband, so he demands from us the reciprocal duties of conjugal love and chastity; that [pg 345] is, that we do not prostitute our souls to Satan, to lust, and to the impurity of the carnal appetites. Wherefore, when he reproves the apostasy of the Jews, he complains that they had discarded chastity, and were polluted with adulteries.[834] Therefore, as a husband, in proportion to the superiority of his purity and chastity, is the more grievously incensed, if he perceive the affection of his wife inclining to a rival, so the Lord, who has in truth espoused us to himself, declares that he feels the most ardent jealousy, whenever we neglect the sacred purity of his conjugal relation to us, and defile ourselves with criminal lusts, but especially when we transfer to any other, or adulterate with any superstition, the worship of his majesty, which ought to be preserved in the most consummate perfection; since by such conduct we not only violate the faith pledged in our nuptials, but even pollute our souls with spiritual adultery.

XIX. Let us inquire what he intends by his threatening to “visit the iniquity of the fathers upon the children to the third and fourth generation.” For besides that it is inconsistent with the equity of the Divine justice to inflict upon an innocent person the punishment due to the offences of another, God himself declares that “the son shall not bear the iniquity of the father.”[835] But this expression is repeated more than once, concerning a deferring to future generations of the punishments of crimes committed by their ancestors. For Moses frequently speaks of “the Lord visiting the iniquity of the fathers upon the children unto the third and fourth generation.”[836] In like manner Jeremiah: “Thou showest loving-kindness unto thousands, and recompensest the iniquity of the fathers into the bosom of their children after them.”[837] Some, who labour very hard to solve this difficulty, are of opinion that its meaning is to be confined to temporal punishments; which if children sustain through the sins of their parents, there is nothing absurd in it; because they frequently conduce to the salvation of those on whom they are inflicted. This is certainly true. For Isaiah denounced to Hezekiah, that on account of the sin which he had committed, his sons should be despoiled of the kingdom and carried away into exile.[838] The families of Pharaoh and Abimelech are afflicted on account of the injury sustained by Abraham.[839] But when this is adduced as a solution of these questions, it is rather an evasion of it, than a proper explanation. For in this and in similar places the Lord threatens a punishment too great to be terminated by the limits of the present life. It must therefore [pg 346] be understood as a declaration that the curse of the Lord righteously rests, not only on the person of an impious man, but also on his whole family. Where it has rested, what can be expected, but that the father, being destitute of the Spirit of God, will lead a most flagitious life; and that the son, experiencing, in consequence of the iniquity of his father, a similar dereliction by the Lord, will pursue the same path to perdition; and that the grandson and the great grandson, the execrable posterity of detestable men, will run headlong after them down the same precipice of destruction?

XX. First let us inquire, whether such punishment be inconsistent with the Divine justice. If the whole nature of man be worthy of condemnation, we know that destruction awaits those who are not favoured by the Lord with the communication of his grace. Nevertheless, they perish through their own iniquity, and not through the unjust hatred of God. Nor is there any room left for expostulation, why they are not assisted by Divine grace to obtain salvation as well as others. Since it is a punishment, therefore, inflicted on the impious and flagitious, in consequence of their transgressions, that their families remain destitute of Divine grace for many generations, who can bring any accusation against God for this most righteous instance of his vengeance? But it will be said, the Lord declares, on the contrary, that the punishment of the sin of the father shall not be transferred to the son. Observe the subject that is treated of in that place. The Israelites, after they had been long harassed by numerous and unceasing calamities, began to use this proverb, “The fathers have eaten sour grapes, and the children's teeth are set on edge;”[840] by which they insinuated, that sins had been committed by their parents, the punishment of which was inflicted on them who were otherwise righteous and innocent, more through the implacable wrath of God, than through a just severity. The Prophet announces to them that this is not the case, but that they are punished for their own transgressions, and that it is incompatible with the Divine justice to punish a righteous son for the iniquity of a wicked father. Nor is this to be found in the penal sanction now under consideration. For if the visitation, of which we are treating, be fulfilled, when God removes from the family of the impious his grace, the light of his truth, and the other means of salvation, the very circumstance of children blinded and abandoned by him being found treading in the footsteps of their fathers, is an instance of their bearing the curse in consequence of the crimes of their parents. But their being the subjects of temporal miseries, and at length of eternal perdition, are punishments from [pg 347] the righteous judgment of God, not for the sins of others, but on account of their own iniquity.

XXI. On the other hand, God gives a promise to extend his mercy to a thousand generations; which also frequently occurs in the Scripture, and is inserted in the solemn covenant with the Church: “I will be a God unto thee, and to thy seed after thee.”[841] In allusion to this, Solomon says, that “the children of the just man are blessed after him;”[842] not only as the effect of a religious education, which is of no small importance, but also in consequence of the blessing promised in the covenant, that the grace of God shall perpetually remain in the families of the pious. This is a source of peculiar consolation to the faithful, but to the impious of great terror; for if, even after death, the memory of righteousness and iniquity has so much influence with God, that the curse of the one and the blessing of the other will redound to posterity, much more will it remain on the persons of the actors themselves. Now, it is no objection to our argument, that the descendants of the impious sometimes grow better, while those of the faithful degenerate; since the Legislator never intended to establish in this case such an invariable rule, as would derogate from his own free choice. For it is sufficient for the consolation of the righteous and the terror of the sinner, that the denunciation is not vain or inefficacious, although it be not always executed. For as the temporal punishments inflicted on a few wicked men are testimonies of the Divine wrath against sin, and of the judgment that will hereafter be pronounced on all sinners, though many escape with impunity even to the end of their lives, so, when the Lord exhibits one example of this blessing, in manifesting his mercy and goodness to the son for the sake of his father, he affords a proof of his constant and perpetual favour to his worshippers; and when, in any one instance, he pursues the iniquity of the father in the son, he shows what a judgment awaits all the reprobate on account of their own transgressions; the certainty of which was what he principally designed in this passage. He also gives us a cursory intimation of the greatness of his mercy, which he extends to a thousand generations, while he has assigned only four generations to his vengeance.

The Third Commandment.

Thou shalt not take the name of the Lord thy God in vain.

XXII. The end of this precept is, that the Lord will have the majesty of his name to be held inviolably sacred by us. [pg 348] The substance of the command therefore is, that we ought not to profane that name by a contemptuous or irreverent use of it. This prohibition necessarily implies an injunction, that we studiously and carefully treat it with religious veneration. Therefore it becomes us to regulate our thoughts and words in such a manner that we may not think or speak any thing concerning God and his mysteries, but with the greatest sobriety and reverence; that in meditating on his works we may form no opinion that is dishonourable to him. These three things, I say, we ought most carefully to observe—first, that whatever we think, and whatever we say of him, should savour of his excellence, correspond to the sacred sublimity of his name, and tend to the exaltation of his magnificence. Secondly, we should not rashly and preposterously abuse his holy word and adorable mysteries to the purposes of ambition, of avarice, or of amusement; but as they bear an impression of the dignity of his name, they should always receive from us the honour and esteem which belong to them. Lastly, we should not injure his works by obloquy or detraction, as some miserable mortals are accustomed to do; but whenever we mention any thing done by him, we should celebrate it with encomiums of wisdom, justice, and goodness. This is “sanctifying” the name of God. In every other case, it is violated by a vain and criminal abuse, because it is carried beyond the limits of that legitimate use, to which alone it is consecrated; and though no other consequence ensue, it is deprived of its dignity, and by degrees rendered contemptible. But if it be so criminal thus rashly and unseasonably to introduce the name of God on every occasion, much more so must it be to apply it to such nefarious uses as they do, who make it subservient to the superstitions of necromancy, to horrible imprecations, to unlawful exorcisms, and to other impious incantations. But an oath is the thing principally contemplated in the command, as the most detestable instance of the perverse abuse of the Divine name; and this is done to inspire us with the greater horror of every species of profanation of it. That this precept relates to the worship of God and the reverence of his name, and not to the equity that ought to be observed among mankind, appears from this—that the subsequent condemnation, in the second table, of perjury and false witness, by which society is injured, would be a needless repetition, if the present precept related to a civil duty. Besides, the division of the law requires this; for, as we have already observed, it is not in vain that God has distributed the law into two tables. Whence we conclude, that in this command he vindicates his just claims, and guards the sanctity of his name, but does not teach the duties which men owe to each other.

XXIII. In the first place, we have to explain what an oath is. It consists in calling upon God as a witness, to confirm the truth of any declaration that we make. For execrations, which contain manifest reproaches against God, are not worthy to be mentioned among oaths. That such an attestation, when rightly performed, is a species of Divine worship, is evident from many places of Scripture; as when Isaiah prophesies of the vocation of the Assyrians and Egyptians to participate in the covenant with Israel. “They shall speak,” says he, “the language of Canaan, and swear to the Lord of hosts.”[843] By “swearing to the Lord” here is intended making a profession of religion. Again, when he speaks of the extension of his kingdom: “He who blesseth himself in the earth shall bless himself in the God of truth; and he that sweareth in the earth shall swear by the God of truth.”[844] Jeremiah says, “If they will diligently learn the ways of my people, to swear by my name, The Lord liveth; as they taught my people to swear by Baal, then shall they be built in the midst of my people.”[845] And we are justly said to profess our religion to the Lord, when we invoke his name to bear witness to us. For thereby we confess that he is truth itself, eternal and immutable; whom we call not only as a witness of the truth, excelling all others, but also as the only defender of it, who is able to bring to light things which are concealed, and in a word, as the searcher of all hearts. For where human testimonies are wanting, we resort for refuge to the testimony of God; and particularly when any thing is to be affirmed, which is hidden in the conscience. For which reason the Lord is extremely angry with them who swear by strange gods, and interprets that species of swearing as a proof of manifest defection from him. “Thy children have forsaken me, and sworn by them that are no gods.”[846] And he declares the atrociousness of this crime by his denunciation of punishment: “I will cut off them that swear by the Lord, and that swear by Malcham.”[847]