18:13. And the Lord said to Abraham: Why did Sara laugh, saying: Shall I, who am an old woman, bear a child indeed?
18:14. Is there any thing hard to God? According to appointment I will return to thee at this same time, life accompanying, and Sara shall have a son.
18:15. Sara denied, saying: I did not laugh: for she was afraid. But the Lord said: Nay; but thou didst laugh.
18:16. And when the men rose up from thence, they turned their eyes towards Sodom: and Abraham walked with them, bringing them on the way.
18:17. And the Lord said: Can I hide from Abraham what I am about to do:
18:18. Seeing he shall become a great and mighty nation, and in him all the nations of the earth shall be blessed?
18:19. For I know that he will command his children, and his household after him, to keep the way of the Lord, and do judgment and justice: that for Abraham’s sake, the Lord may bring to effect all the things he hath spoken unto him.
18:20. And the Lord said: The cry of Sodom and Gomorrha is multiplied, and their sin is become exceedingly grievous.
18:21. I will go down and see whether they have done according to the cry that is come to me; or whether it be not so, that I may know.
I will go down, etc.... The Lord here accommodates his discourse to the way of speaking and acting amongst men; for he knoweth all things, and needeth not to go anywhere for information. Note here, that two of the three angels went away immediately for Sodom; whilst the third, who represented the Lord, remained with Abraham.