Genesis 18:9 And they said unto him, Where is Sarah thy wife? And he said, Behold, in the tent. 10 And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.
[Patriarchs & Prophets pp 138>139] Abraham had seen in his guests only three tired wayfarers, little thinking that among them was One whom he might worship without sin. But the true character of the heavenly messengers was now revealed. Though they were on their way as ministers of wrath, yet to Abraham, the man of faith, they spoke first of blessings. Though God is strict to mark iniquity and to punish transgression, He takes no delight in vengeance. The work of destruction is a “strange work” to Him who is infinite in love. “The secret of the Lord is with them that fear Him.” Psalm 25:14. Abraham had honored God, and the Lord honored him, taking him into His counsels, and revealing to him His purposes.
“Shall I hide from Abraham that thing which I do?” said the Lord. “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.” God knew well the measure of Sodom's guilt; but He expressed Himself after the manner of men, that the justice of His dealings might be understood. Before bringing judgment upon the transgressors He would go Himself, to institute an examination of their course; if they had not passed the limits of divine mercy, He would still grant them space for repentance.
Two of the heavenly messengers departed, leaving Abraham alone with Him whom he now knew to be the Son of God. And the man of faith pleaded for the inhabitants of Sodom. Once he had saved them by his sword, now he endeavored to save them by prayer. Lot and his household were still dwellers there; and the unselfish love that prompted Abraham to their rescue from the Elamites, now sought to save them, if it were God's will, from the storm of divine judgment.
Genesis 18:17 And the Lord said, Shall I hide from Abraham that thing which I do; 20 And the Lord said, Because the cry of Sodom and Gomorrah is great, and because their sin is very grievous; 21 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.
May God add His blessing to the study of His word. "Good night" and God bless!