Jamieson, Fausset and Brown on Genesis 18:23

Ge 18:23-33. Abraham's Intercession.

23. Abraham drew near, and said, &c.--The scene described is full of interest and instruction--showing in an unmistakable manner the efficacy of prayer and intercession. (See also Pr 15:8; Jas 5:16). Abraham reasoned justly as to the rectitude of the divine procedure (Ro 3:5, 6), and many guilty cities and nations have been spared on account of God's people (Mt 5:13; 24:22).