Ver. 5. "And God saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually." The margin saith, "not only the imagination, but also the purposes and desires."
These words are to be understood, as still respecting the apostacy that we read of in the first and second verses, and are (in my thoughts) to be taken as the effect of their degeneracy. For though it be true, that the best of men, in their most holy and godly behaviour, have wicked and sinful hearts; yet so long as they walk sincerely according to the rules prescribed of God, there is no such character upon them; especially as it stands related to the words that immediately follow; to wit, "that it repented the Lord that he made them."
These evil and wicked purposes then were in special the fruit of their apostacy: for indeed, when men are once fallen from God, they then, as the judgment of God upon them, are given up to all unrighteousness. Again, apostatizing persons are counted abhorrers of God (Zech 11:8). Yet persons in this condition will seek their own justification, turning things upside down, traversing their ways like the dromedaries; bearing us still in hand, that they stand not guilty of sin, but that what they do is allowable, or winked at of God. Besides, they say their hearts are still upright with God, and that they have not forsaken the simplicity of his way, of a wicked and ungodly design, with an hundred more the like pretences; all which are condemned of God, and held by him as abominable and vile (Jer 2:31-37).
And God saw, &c. They covered their shame from men, like the adulterous woman in the Proverbs, and would speak with oily mouths, thereby to cozen the world (Pro 30:20); but God knew their hearts, and had revealed their sin to his servant Noah; he therefore in the Spirit of God, as one alone, cried out against their wickedness.
Hence learn to judge of apostates, not by their words, nor pretences, nor ungodly coverings, whereby they may seek to hide themselves from the stroke of a convincing argument, but judge them by the words of God; for however they think of themselves, or would be accounted of others, God sees their wickedness is great.
"And that every imagination of the thoughts of his heart, was only evil continually." If they think they have not sinned; if they think they promote religion; if they think to find out a medium to make peace between the seed of the woman, and the wicked seed of Cain; all is alike ungodly, they have forsaken the right way, they have dissembled the known truth, they have rejected the word of the Lord: And what wisdom or goodness is in them?
Ver. 6. "And it repented the Lord that he had made man on the earth, and it grieved him at his heart."
Repentance is in us a change of the mind; but in God, a change of his dispensations; for otherwise he repenteth not, neither can he; because it standeth not with the perfection of his nature: In him "is no variableness, neither shadow of turning" (James 1:17).
Wherefore, it is man, not God, that turns. When men therefore reject the mercy and ways of God, they cast themselves under his wrath and displeasure; which because it is executed according to the nature of his justice, and the severity of his law, they miss of the mercy promised before (Num 23:19). Which that we may know, those shall one day feel that shall continue in final impenitency. Therefore, God speaking to their capacity, he tells them, he hath repented of doing them good. "The Lord repented that he had made Saul king" (1 Sam 15:35). And yet this repentance was only a change of the dispensation, which Saul by his wickedness had put himself under; otherwise the strength, the eternity of Israel, "will not lie nor repent" (v 29).
The sum is therefore, that men had now by their wickedness put themselves under the justice and law of God; which justice by reason of its perfection, could not endure they should abide on the earth any longer; and therefore now, as a just reward of their deed, they must be swept from the face thereof.