So Amasa went to assemble the men of Judah: but he tarried longer than the set time which he had appointed him.
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 us.
References for 2 Samuel 20:6
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.
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 .
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.
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 him not again ; and he died . So Joab and Abishai his brother pursued after Sheba the son of Bichri.
References for 2 Samuel 20:10
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.
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 .
When he was removed out of the highway, all the people went on after Joab, to pursue after Sheba the son of Bichri.
And he went through all the tribes of Israel unto Abel, and to Bethmaachah, and all the Berites: and they were gathered together , and went also after him.
And they came and besieged him in Abel of Bethmaachah, and they cast up a bank against the city, and it stood in the trench: and all the people that were with Joab battered the wall, to throw it down .
References for 2 Samuel 20:15