Sforno on Genesis 18:25/ספורנו על בראשית י״ח:כ״ה

1והיה כצדיק כרשע, subject to chance, being in the wrong place at the wrong time.

2השופט כל הארץ, seeing that You are the judge of the whole earth, if You will judge people based on the conduct of the majority You would eventually be forced to destroy mankind, seeing that most people everywhere are wicked.