Ver. 9. "These are the generations of Noah: Noah was a just man, and perfect in his generations; and Noah walked with God."
The Holy Ghost here makes a short digression from his progress, in his relation of the wickedness of the world; and yet not impertinently; for seeing Noah was the man that escaped the judgment, his escape must be for some reason; which was, because God was gracious to him, and because God had justified him. Besides Noah being now made righteous, faithfully walketh with God.
"He was just and perfect in his generations." But why it is said, Generations? It might be, because he was faithful to God and man, having the armour of righteousness on the right hand, and on the left. It is said in Isaiah, That Christ "made his grave with the wicked, and with the rich in his death" (53:9). To import, That they only have benefit by him to eternal life, that die by his example, as well as live by his blood; for in his death was both merit and example; and they are like to miss in the first, that are not concerned in the second (Phil 8:16).
"Perfect in his generations." In his carriage, doctrines and life, before both God and man. And thus ought every preacher to be; he ought to do in the sight of God, what he commands to men; by this means he saveth both himself, and them that hear him (1 Tim 4:16).
Besides, Noah was a man, as well as a saint, and in either sense had a generation: to both of which grace made him faithful; and he that shall not serve his generation as a man, will hardly serve his generation as a Christian. But Noah was perfect in both, he was "perfect in his generations."
"And Noah walked with God." This shews he was sincere in his work; for a hypocrite may, as to outward shew, do as the saint of God: but he doth it with respect to men, not God, and therefore he is a hypocrite. To walk with God then, is not only to do the duty commanded, but to do it as God requireth it; that is, to do it with faith, and son-like fear, as in God's sight, "with singleness of heart."
Ver. 10. "And Noah begat three sons, Shem, Ham, and Japheth."
These are the offspring of Noah, and by these was the earth replenished after the flood, as will be further seen hereafter.
Ver. 11. "The earth also was corrupt before God, and the earth was filled with violence."
He has now returned to the matter in hand before; to wit, the causes of the flood.