And God looked upon the earth, and, behold, it was corrupt; for all flesh had corrupted his way upon the earth.

And when God had seen that the earth was corrupted (for all flesh had corrupted its way upon the earth,)

And God looked upon the earth, and behold, it was corrupt; for all flesh had corrupted its way on the earth.

And God seeth the earth, and lo, it hath been corrupted, for all flesh hath corrupted its way on the earth.

And God, looking on the earth, saw that it was evil: for the way of all flesh had become evil on the earth.

And when God had seen that the earth had been corrupted, (indeed, all flesh had corrupted its way upon the earth)

Et vidit Deus terran, et ecce, corrupta erat: nam corruperat omnis caro viam suam super terram.

And God looked upon the earth, and, behold, it was corrupt,.... This is spoken as if he had never looked upon it before; whereas his eyes are always upon the earth, and the inhabitants of it, and upon all their ways and works: but this denotes the special notice he took, and the particular observation he made upon the condition and circumstances the earth, and its inhabitants, were in. And this is remarked, as well as the particle "behold" is used, to denote the certainty of this corruption; it must needs be true, that the earth was corrupted, since the omniscient God had declared it to be so, who sees and knows all things:
for all flesh had corrupted his way upon the earth: that is, all men, excepting Noah; who were flesh, carnal and unregenerate persons; these had corrupted the way of God, the true religion, with their idolatries: and they had corrupted their own way, their manners, their life and conversation with their uncleanness and wickedness of various sorts: the Arabic writers (y) say, that after Enoch was taken away, the children of Seth and of Cain worshipped idols, everyone as he pleased, and were immersed in wickedness, and gave their right hands to each other, and joined in fellowship in committing sin and vice; and that in the times of Noah, none were left in the holy mount but he and his wife, and his three sons and their wives; all went down below and mixed with the daughters of Cain, and were immersed in sins, and worshipped strange gods, and so the earth was corrupted and filled with lasciviousness. The Jewish writers also observe (z), that the generations of Cain were guilty of uncleanness, men and women, like beasts, and defiled themselves with all kind of fornication and incest, everyone with his mother, and with his own sister, and with his brother's wife, and that openly, and in the streets: and Sanchoniatho (a), the Heathen historian, the writer of the history of Cain's line, says of the fifth generation before the flood, that the women of those times, without shame, lay with any man they could meet with.
(y) Elmacinus & Patricides, apud Hottinger. Smegma Oriental. l. 1. c. 8. p. 242, 247. (z) Pirke Eliezer, c. 22. (a) Apud Euseb. Praepar. Evangel. l. 1. p. 34, 35.

God told Noah his purpose to destroy the wicked world by water. The secret of the Lord is with them that fear him, Psalm 25:14. It is with all believers, enabling them to understand and apply the declarations and warnings of the written word. God chose to do it by a flood of waters, which should drown the world. As he chooses the rod with which he corrects his children, so he chooses the sword with which he cuts off his enemies. God established his covenant with Noah. This is the first place in the Bible where the word 'covenant' is found; it seems to mean, 1. The covenant of providence; that the course of nature shall be continued to the end of time. 2. The covenant of grace; that God would be a God to Noah, and that out of his seed God would take to himself a people. God directed Noah to make an ark. This ark was like the hulk of a ship, fitted to float upon the waters. It was very large, half the size of St. Paul's cathedral, and would hold more than eighteen of the largest ships now used. God could have secured Noah without putting him to any care, or pains, or trouble; but employed him in making that which was to be the means to preserve him, for the trial of his faith and obedience. Both the providence of God, and the grace of God, own and crown the obedient and diligent. God gave Noah particular orders how to make the ark, which could not therefore but be well fitted for the purpose. God promised Noah that he and his family should be kept alive in the ark. What we do in obedience to God, we and our families are likely to have the benefit of. The piety of parents gets their children good in this life, and furthers them in the way to eternal life, if they improve it.

God looked upon the earth - And was himself an eye - witness of the corruption that was in it, for all flesh had corrupted his way - It was not some particular nations that were thus wicked, but the whole world so; there was none good beside Noah.