John Gills Exposition of the Bible Commentary - 2 Samuel 18:21
Then said Joab to Cushi ,.... The Ethiopian, or blackamoor; who either was an Ethiopian by birth and proselyted, or he was an Israelite of a black complexion, and therefore so called; and was judged a proper person by the general to carry such dismal news to the king, as he knew it would be. Some Jewish writers F1 Pirke Eliezer, c. 53. take him to be the same with Cush the Benjaminite, in the title of the seventh psalm, Psalm 7:1 ; and that he is the same that told Joab he saw... read more
Matthew Henry's Complete Commentary - 2 Samuel 18:19-33
Absalom's business is done; and we are now told, I. How David was informed of it. He staid behind at the city of Mahanaim, some miles from the wood where the battle was, and in the utmost border of the land. Absalom's scattered forces all made homeward toward Jordan, which was the contrary way from Mahanaim, so that his watchmen could not perceive how the battle went, till an express came on purpose to bring advice of the issue, which the king sat in the gate expecting to hear, 2 Sam. 18:24.... read more