201 Just then a good-for-nothing named Sheba son of Bicri the Benjaminite blew a blast on the ram's horn trumpet, calling out, We've got nothing to do with David, there's no future for us with the son of Jesse! Let's get out of here, Israel - head for your tents! 2 So all the men of Israel deserted David and followed Sheba son of Bicri. But the men of Judah stayed committed, sticking with their king all the way from the Jordan to Jerusalem. 3 When David arrived home in Jerusalem, the king took the ten concubines he had left to watch the palace and placed them in seclusion, under guard. He provided for their needs but didn't visit them. They were virtual prisoners until they died, widows as long as they lived.
4 The king ordered Amasa, "Muster the men of Judah for me in three days; then report in." 5 Amasa went to carry out his orders, but he was late reporting back. 6 So David told Abishai, "Sheba son of Bicri is going to hurt us even worse than Absalom did. Take your master's servants and hunt him down before he gets holed up in some fortress city where we can't get to him." 7 So under Abishai's command, all the best men - Joab's men and the Kerethites and Pelethites - left Jerusalem to hunt down Sheba son of Bicri. 8 They were near the boulder at Gibeon when Amasa came their way. Joab was wearing a tunic with a sheathed sword strapped on his waist, but the sword slipped out and fell to the ground. 9 Joab greeted Amasa, "How are you, brother?" and took Amasa's beard in his right hand as if to kiss him.
Matthew Henry's Commentary on 2 Samuel 20:1-9
Commentary on 2 Samuel 20:1-3
(Read 2 Samuel 20:1-3)
One trial arises after another for our good, till we reach the place where sin and sorrow are for ever done away. Angry disputers misunderstand or misconstrue one another's words; proud men will have every thing their own way, or wholly refuse their assistance. The favour of the many is not to be depended upon; and what have others to expect, when Hosanna to the Son of David was soon changed to Crucify him, crucify him?
Commentary on 2 Samuel 20:4-13
(Read 2 Samuel 20:4-13)
Joab barbarously murdered Amasa. The more plot there is in a sin, the worse it is. Joab contentedly sacrificed the interest both of the king and the kingdom to his personal revenge. But one would wonder with what face a murderer could pursue a traitor; and how, under such a load of guilt, he had courage to enter upon danger: his conscience was seared.