Psalms 109:14

And as the destruction which he denounces against the houses and families of the wicked is so extensive, that God punishes them in the person of their posterity, so he desires that God may remember the iniquities of their fathers and mothers, in order that their condemnation may be complete; and this is a principle in perfect accordance with the commonly received doctrine of Scripture. God, out of regard to his covenant, which is in force to a thousand generations, extends and continues his mercy towards posterity; but he also punishes iniquity unto the third and fourth generation. In doing this he does not involve the guiltless with the wicked indiscriminately, but by withholding from the reprobate the grace and illumination of his Spirit, he prepares the vessels of wrath for destruction, even before they are born, Romans 9:21. To the common sense of mankind, the thought of such severity is horrifying: but then we must recollect, that if we attempt to measure the secret and inscrutable judgments of God by our finite minds, we do him wrong. Struck with horror at the severity of this threatening, let us improve it as the means of filling us with reverence and godly fear. In reference to the language of Ezekiel,

“The son shall not bear the iniquity of the father, but the soul that sinneth, it shall die;” Ezekiel 18:20

we know that in these words he disproves the groundless complaints of the people, who, boasting that they were guiltless, imagined that they were punished wrongfully. When, however, God continues his vengeance from the father to the children, he leaves them no room for palliation or complaint, because they are all equally guilty. We have already said, that vengeance commences when God in withdrawing his Spirit, both from the children and the fathers, delivers them over to Satan. Some may inquire how it comes to pass, that the prophet, in desiring that their sin may be continually before God’s eyes, does not likewise add, let their name be blotted out from heaven, but merely wishes them to be cut off, and to perish in the world? My reply is, that he spoke agreeably to the custom of the age in which he lived, when the nature of spiritual punishments was not so well understood as in our times, because the period had not yet arrived, when the revelation of God’s will was to be full and complete. Besides, it is the design of David, that the vengeance of God may be so manifest, that the whole world may acquiesce in his equity as a judge.