John Gills Exposition of the Bible Commentary - 2 Samuel 20:6
And David said to Abishai ,.... For it seems he would have nothing to say to Joab, being displeased with him for slaying Absalom, and having removed him from his posts; and therefore speaks to the next officer in his army, Abishai; though Josephus F16 Antiqu. l. 7. c. 11. sect. 6. says, he addressed himself to Joab, contrary to the express words of the text: now shall Sheba the son of Bichri do us more harm than did Absalom ; gain a greater party, and give more trouble to subdue... read more
Matthew Henry's Complete Commentary - 2 Samuel 20:4-13
We have here Amasa's fall just as he began to rise. He was nephew to David (2 Sam. 17:25), had been Absalom's general and commander-in-chief of his rebellious army, but, that being routed, he came over into David's interest, upon a promise that he should be general of his forces instead of Joab. Sheba's rebellion gives David an occasion to fulfil his promise sooner than he could wish, but Joab's envy and emulation rendered its fulfillment of ill consequence both to him and David. I. Amasa has... read more