This one fellow came in to sojourn. — Heb. the one came to sojourn, as if an extraordinary concession had been made in Lot’s favour in allowing him to dwell within their walls. In ancient times the rights of citizenship were most jealously guarded, and the position of a sojourner made very bitter.
He will needs be a judge. — Heb., is ever acting as a judge. This suggests that Lot had previously reproved the men of Sodom, and agrees with 2 Peter 2:8.