2 Samuel 18:14

I may not tarry thus. — Joab evidently feels the home-thrusts made by the man in the argument, but, determined on his deed of violence, he sees that it is worse than useless to delay. His act was simply murder. In a lawless age it was defensible as the one act which terminated the rebellion and made a renewal of it impossible, and destroyed a traitor and would-be parricide who was likely otherwise to escape punishment; but it was a distinct disobedience of express orders, and Joab’s taking the execution into his own hands was wilful and deliberate murder.

Three darts. — The word means a rod or staff. Also the word heart is the same as the following word midst, and is not therefore to be taken too literally. Joab seized such sticks as were at hand in the wood and thrust them into Absalom, giving him most painful and probably mortal wounds, but not instantly killing him. Then (2 Samuel 18:15) the ten men who had Joab’s armour and weapons came up and finally killed Absalom.