John Gills Exposition of the Bible Commentary - 2 Samuel 20:4
Then said the king to Amasa ,.... Whom he had promised to make general of his army, 2 Samuel 19:13 ; and by the following order declared him such: assemble me the men of Judah within three days ; which was done by the sound of the trumpet, or by the proclamation of a herald; it seems that the men of Judah, who attended David to Jerusalem, were gone to their respective cities and places of abode, or there would have been no occasion for such a summons; though it is strange they should,... 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