26 God said, "If I find fifty decent people in the city of Sodom, I'll spare the place just for them." 27 Abraham came back, "Do I, a mere mortal made from a handful of dirt, dare open my mouth again to my Master? 28 What if the fifty fall short by five - would you destroy the city because of those missing five?" He said, "I won't destroy it if there are forty-five." 29 Abraham spoke up again, "What if you only find forty?" "Neither will I destroy it if for forty." 30 He said, "Master, don't be irritated with me, but what if only thirty are found?" "No, I won't do it if I find thirty." 31 He pushed on, "I know I'm trying your patience, Master, but how about for twenty?" "I won't destroy it for twenty." 32 He wouldn't quit, "Don't get angry, Master - this is the last time. What if you only come up with ten?" "For the sake of only ten, I won't destroy the city." 33 When God finished talking with Abraham, he left. And Abraham went home.
Matthew Henry's Commentary on Genesis 18:26-33
Commentary on Genesis 18:23-33
(Read Genesis 18:23-33)
Here is the first solemn prayer upon record in the Bible; and it is a prayer for the sparing of Sodom. Abraham prayed earnestly that Sodom might be spared, if but a few righteous persons should be found in it. Come and learn from Abraham what compassion we should feel for sinners, and how earnestly we should pray for them. We see here that the effectual, fervent prayer of a righteous man avails much. Abraham, indeed, failed in his request for the whole place, but Lot was miraculously delivered. Be encouraged then to expect, by earnest prayer, the blessing of God upon your families, your friends, your neighbourhood. To this end you must not only pray, but you must live like Abraham. He knew the Judge of all the earth would do right. He does not plead that the wicked may be spared for their own sake, or because it would be severe to destroy them, but for the sake of the righteous who might be found among them. And righteousness only can be made a plea before God. How then did Christ make intercession for transgressors? Not by blaming the Divine law, nor by alleging aught in extenuation or excuse of human guilt; but by pleading HIS OWN obedience unto death.