"The earth also was corrupt." By earth, he may here mean, those that are without the church: and if so, then by corrupt here, we must understand, wicked after a most high manner; for albeit the world and generation of Cain be always sinners before God, yet the Lord cutteth not off the world in general, nor a nation in particular, but because of the commission of eminent outrage and wickedness. Thus it was with those of Sodom, a little before the Lord with fire devoured them. "The men of Sodom [saith the text] were wicked, and sinners before the Lord exceedingly" (Gen 13:13).
Again: As by corrupt, we may understand, corrupt by way of eminency; so again, they were corrupt incurably. This is evident, because they were not brought off from sin by the ministry of Noah, the only appointed means of their conversion.
Hence note, That when men are sinners exceedingly, and when the means of grace appointed of God for their recovery, prove ineffectual, then they are near some signal judgment (2 Chron 36). Thus back-sliding Jerusalem, because she was wicked with an high hand (Eze 24:13,14), and could not be cured by the ministry of the prophets, therefore her sons must go forth of her into captivity, and the city burned to the ground with fire (Jer 15:1-3).
"And the earth was filled with violence." First, they had violated the law of God, in making and maintaining ungodly and wicked communion; according to that of the prophet, "Her priests have violated my law, and have profaned mine holy things." But how? "They have put no difference between the holy and profane, neither have they shewed difference between the unclean and the clean" (Eze 22:26).
They also perverted judgment between a man and his neighbour: adhering to their own party, in disaffection to the religious. This is supposed, because of the exceeding latitude of the expression, "The earth was filled with violence"; that is, all manner of violence, outrage and cruelty was committed by this sort of people. This takes in that saying of Solomon, the oppression of the poor, especially God's poor, is included, in a "violent perverting of judgment and justice" (Eccl 5:8).
They also shewed violence to the lives of good men, as may be gathered by the act of Lamech, one of the sons of Cain. In a word, "The earth was filled with violence"; violence of every kind; lust and wickedness was outrageous, there was a world of ungodliness among these ungodly men.
Ver. 12. "And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth."
By these words therefore is confirmed the sense of the former verse, "The earth was corrupt"; for God saw it was so: "The earth was full of violence," for they had corrupted God's way.
"And God looked upon the earth." This shews us, That the Lord doth not with haste, or in a rash inconsiderate way, pour his judgments upon the world; but that with judgment and knowledge, the wickedness first being certain, and of merit deserving the same. This is seen in his way of dealing with Sodom. "And the Lord said, Because the cry of Sodom and Gomorrah is great, and because their sin is very grievous, I will go down now, and see whether they have done altogether according to the cry of it, which is come unto me; and if not, I will know" (Gen 18:21).
"And, behold, it was corrupt; for all flesh had corrupted his way upon the earth." It proved, as that of Sodom did, according to the cry thereof; for "all flesh had corrupted his way." God's WAY, by violating his law, and perverting of judgment, as was hinted before. All flesh had corrupted it, therefore the evil needed not to be long in searching out: As God saith by the prophet Jeremiah, "I have not found it by diligent search, but upon all these" (2:34). Here upon the whole earth, none exempted but righteous Noah.