2 Samuel 20:13 Meaning

11And 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.

12And 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.

13When he was removed out of the highway, all the people went on after Joab, to pursue after Sheba the son of Bichri.

14And he went through all the tribes of Israel unto Abel, and to Beth-maachah, and all the Berites: and they were gathered together, and went also after him.

15And they came and besieged him in Abel of Beth-maachah, 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.