Rashi on Genesis 18:23/רש"י על בראשית י״ח:כ״ג

1ויגש אברהם AND ABRAHAM DREW NEAR — We find the verb ננש “to come near” used in the sense of coming near to wage war — (2 Samuel 10:13) “So Joab … drew near unto the battle”; — of coming near to persuade by entreaty — (44:18) “And Judah came near to him [and said, Oh, my lord]” — and of coming near to pray — (1 Kings 18:36) “And Elijah the prophet came near [and said, O Lord, God of Abraham etc.]” Abraham employed all these methods — to fight, by speaking stern words, and to persuade by entreaty, and to pray (Genesis Rabbah 49:8).

2האף תספה means wilt Thou also destroy. But according to the Targum of Onkelos which translates it (the word האף) in the sense of anger, the explanation would be as follows: will Your anger urge you to destroy righteous with wicked?