thou = thou thyself. Hebrew "thy face". Figure of speech Synecdoche (of Part), App-6, put to emphasise the whole person. to battle. Hebrew. karat), never used of battle (which is milhamah). Bikkrab, rendered "to battle", is an abbreviation for bekirbah = "in the midst of them", which is the reading of the Septuagint and Vulgate.
in thine own person. By all this emphasis Hushai represents Ahithophel's personal malice (which need not disturb Absalom) as being personal pride aimed against Absalom. See verses: 2Sa_17:1-3, "I will arise"; "I will come"; "I will smite"; "I will bring back", &c.