4 Then said the king to Amasa, Assemble [1] me the men of Judah within three days, and be thou here present. 5 So Amasa went to assemble the men of Judah: but he tarried longer than the set time which he had appointed him. 6 And David said to Abishai, Now shall Sheba the son of Bichri do us more harm than did Absalom: take thou thy lord's servants, and pursue after him, lest he get him fenced cities, and escape [2] us. 7 And there went out after him Joab's men, and the Cherethites, and the Pelethites, and all the mighty men: and they went out of Jerusalem, to pursue after Sheba the son of Bichri. 8 When they were at the great stone which is in Gibeon, Amasa went before them. And Joab's garment that he had put on was girded unto him, and upon it a girdle with a sword fastened upon his loins in the sheath thereof; and as he went forth it fell out. 9 And Joab said to Amasa, Art thou in health, my brother? And Joab took Amasa by the beard with the right hand to kiss him. 10 But Amasa took no heed to the sword that was in Joab's hand: so he smote him therewith in the fifth rib, and shed out his bowels to the ground, and struck [3] him not again; and he died. So Joab and Abishai his brother pursued after Sheba the son of Bichri. 11 And one of Joab's men stood by him, and said, He that favoureth Joab, and he that is for David, let him go after Joab. 12 And Amasa wallowed in blood in the midst of the highway. And when the man saw that all the people stood still, he removed Amasa out of the highway into the field, and cast a cloth upon him, when he saw that every one that came by him stood still.
4 Then the king said to Amasa, "Summon the men of Judah to come to me within three days, and be here yourself." 5 But when Amasa went to summon Judah, he took longer than the time the king had set for him. 6 David said to Abishai, "Now Sheba son of Bikri will do us more harm than Absalom did. Take your master's men and pursue him, or he will find fortified cities and escape from us."
4 Then the king said to Amasa, "Call the men of Judah together to me within three days, and be here yourself." 5 So Amasa went to summon Judah, but he delayed beyond the set time that had been appointed him. 6 And David said to Abishai, "Now Sheba the son of Bichri will do us more harm than Absalom. Take your lord's servants and pursue him, lest he get himself to fortified cities and escape from us."
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. 10 Amasa didn't notice the sword in Joab's other hand. Joab stuck him in the belly and his guts spilled to the ground. A second blow wasn't needed; he was dead. Then Joab and his brother Abishai continued to chase Sheba son of Bicri. 11 One of Joab's soldiers took up his post over the body and called out, "Everyone who sides with Joab and supports David, follow Joab!" 12 Amasa was lying in a pool of blood in the middle of the road; the man realized that the whole army was going to stop and take a look, so he pulled Amasa's corpse off the road into the field and threw a blanket over him so it wouldn't collect spectators.
4 And the king said to Amasa, "Assemble the men of Judah for me within three days, and be present here yourself." 5 So Amasa went to assemble the men of Judah. But he delayed longer than the set time which David had appointed him. 6 And David said to Abishai, "Now Sheba the son of Bichri will do us more harm than Absalom. Take your lord's servants and pursue him, lest he find for himself fortified cities, and escape us." 7 So Joab's men, with the Cherethites, the Pelethites, and all the mighty men, went out after him. And they went out of Jerusalem to pursue Sheba the son of Bichri. 8 When they were at the large stone which is in Gibeon, Amasa came before them. Now Joab was dressed in battle armor; on it was a belt with a sword fastened in its sheath at his hips; and as he was going forward, it fell out. 9 Then Joab said to Amasa, "Are you in health, my brother?" And Joab took Amasa by the beard with his right hand to kiss him. 10 But Amasa did not notice the sword that was in Joab's hand. And he struck him with it in the stomach, and his entrails poured out on the ground; and he did not strike him again. Thus he died. Then Joab and Abishai his brother pursued Sheba the son of Bichri. 11 Meanwhile one of Joab's men stood near Amasa, and said, "Whoever favors Joab and whoever is for David--follow Joab!" 12 But Amasa wallowed in his blood in the middle of the highway. And when the man saw that all the people stood still, he moved Amasa from the highway to the field and threw a garment over him, when he saw that everyone who came upon him halted.
4 Then the king told Amasa, "Mobilize the army of Judah within three days, and report back at that time." 5 So Amasa went out to notify Judah, but it took him longer than the time he had been given. 6 Then David said to Abishai, "Sheba son of Bicri is going to hurt us more than Absalom did. Quick, take my troops and chase after him before he gets into a fortified town where we can't reach him." 7 So Abishai and Joab, together with the king's bodyguard and all the mighty warriors, set out from Jerusalem to go after Sheba. 8 As they arrived at the great stone in Gibeon, Amasa met them. Joab was wearing his military tunic with a dagger strapped to his belt. As he stepped forward to greet Amasa, he slipped the dagger from its sheath. 9 "How are you, my cousin?" Joab said and took him by the beard with his right hand as though to kiss him. 10 Amasa didn't notice the dagger in his left hand, and Joab stabbed him in the stomach with it so that his insides gushed out onto the ground. Joab did not need to strike again, and Amasa soon died. Joab and his brother Abishai left him lying there and continued after Sheba. 11 One of Joab's young men shouted to Amasa's troops, "If you are for Joab and David, come and follow Joab." 12 But Amasa lay in his blood in the middle of the road, and Joab's man saw that everyone was stopping to stare at him. So he pulled him off the road into a field and threw a cloak over him.
Matthew Henry's Commentary on 2 Samuel 20:4-12
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.