Matthew Henry on 2 Samuel 18:19–end
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, Sa2 18:24.
1. Cushi was the man Joab ordered to carry the tidings (Sa2 18:21), an Ethiopian, so his name signifies, and some think that he was so by birth, a black that waited on Joab, probably one of the ten that had…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Samuel 18:19
Then said Ahimaaz . . . Let me . . . run and bear the king tidings--The reasons why Joab declined to accept Ahimaaz' offer to bear intelligence of the victory to David, and afterwards let him go along with another, are variously stated by commentators--but they are of no importance. Yet the alacrity of the messengers, as well as the eager excitement of the expectants, is graphically described.
Adam Clarke on 2 Samuel 18:21
Tell the king what thou hast seen - At this time the death of Absalom was not publicly known; but Joab had given Cushi private information of it. This Ahimaaz had not, for he could not tell the king whether Absalom were dead. To this Joab seems to refer, Sa2 18:22 : "Thou hast no tidings ready.
John Gill on 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 (a) 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 Absalom hanging in an oak, and declared that, if a thousand shekels of silver were offered him, he would not have put forth his hand against him, 2 Samuel 18:10; though some think this was one of the ten young men that waited on Joab, and by…