Genesis 18:32
And he said, Oh let not the Lord be angry, and I will speak yet but this once: Peradventure ten shall be found there. And he said, I will not destroy it for ten's sake.
And he said, Oh, let not the Lord be angry, and I will speak yet but this once,.... This should be the last request he should make on this account, and therefore he desired he might be heard without any marks of his displeasure;
Peradventure ten shall be found there: how would the place be dealt with then? would it be consumed or not?
And he said, I will not destroy it for ten's sake; though no more righteous persons were found in it. Some of the Jewish writers say {g}, he ended at ten, because he supposed there were ten righteous persons in Lot's family, Lot and his wife, and their four daughters, and their four husbands; but they forgot that two of Lot's daughters were unmarried, and how many he had married is not known; ten they say make a congregation, and wherever there are ten righteous persons, a place is saved for their sakes.
{g} Bereshit Rabba, sect. 49. fol. 44. 3.