Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[99] When Noah had made these supplications, God, who loved the man for his righteousness, granted entire success to his prayers, and said, that it was not he who brought the destruction on a polluted world, but that they underwent that vengeance on account of their own wickedness; and that he had not brought men into the world if he had himself determined to destroy them, it being an instance of greater wisdom not to have granted them life at all, than, after it was granted, to procure their destruction; "But the injuries," said he, "they offered to my holiness and virtue, forced me to bring this punishment upon them. But I will leave off for the time to come to require such punishments, the effects of so great wrath, for their future wicked actions, and especially on account of thy prayers. But if I shall at any time send tempests of rain, in an extraordinary manner, be not affrighted at the largeness of the showers; for the water shall no more overspread the earth. However, I require you to abstain from shedding the blood of men, and to keep yourselves pure from murder; and to punish those that commit any such thing. I permit you to make use of all the other living creatures at your pleasure, and as your appetites lead you; for I have made you lords of them all, both of those that walk on the land, and those that swim in the waters, and of those that fly in the regions of the air on high, excepting their blood, for therein is the life. But I will give you a sign that I have left off my anger by my bow [whereby is meant the rainbow, for they determined that the rainbow was the bow of God]. And when God had said and promised thus, he went away.