These rhetorical questions are asked to criticize Hushai. They can be translated as a statement. AT: "You have been a loyal friend to David; you should have gone with him." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Here Hushai is referring to Absalom in the third person to take emphasize off of him and place it on Yahweh and the people who chose him. This can be written in second person. AT: "you are the one whom ... you are the man ... with you" (See: [[rc://en/ta/man/translate/figs-123person]])