2 Samuel 20

Sheba blew a trumpet
20:1-2

20:1 And there happened to be there a man of Belial, whose name was Sheba, the son of Bichri, a Benjamite: and he blew a trumpet, and said, We have no part in David, neither have we inheritance in the son of Jesse: every man to his tents, O Israel.

There was a man named Sheba (a man of Belial) who blew a trumpet and said, "We don't want anything to do with David. Everyone should go home."

20:2 So every man of Israel went up from after David, and followed Sheba the son of Bichri: but the men of Judah clave unto their king, from Jordan even to Jerusalem.

So all the men of Israel left David to follow Sheba. But the men of Judah stayed with David.
David punishes his concubines
(for being publicly raped by his son Absalom)
20:3

20:3 And David came to his house at Jerusalem; and the king took the ten women his concubines, whom he had left to keep the house, and put them in ward, and fed them, but went not in unto them. So they were shut up unto the day of their death, living in widowhood.

When David returned to his house in Jerusalem, he punished his ten concubines for being publicly raped by his son (See 2 Sam 16:21-22) by refusing to ever again have sex with them and forced them to "keep house" for the rest of their lives.
Joab murders Amasa (by smiting him under the fifth rib)
20:4-14

20:4 Then said the king to Amasa, Assemble me the men of Judah within three days, and be thou here present.

20:5 So Amasa went to assemble the men of Judah: but he tarried longer than the set time which he had appointed him.

David told Amasa to gather the men of Judah and bring them to him within three days.

But three days passed and Amasa didn't bring the men of Judah.

20:6 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 us.

20:7 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.

So David said to Abishai, "Sheba is even more of a threat to us than was Absalom. Go get him. Don't let him escape."

20:8 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.

20:9 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.

20:10 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 him not again; and he died. So Joab and Abishai his brother pursued after Sheba the son of Bichri.

20:11 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.

20:12 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.

When Amasa joined them, Joab came up to him and grabbed his beard, as if to kiss him.

But instead of kissing him, he smote him in the fifth rib, and all his bowels spilled out.

And Amasa wallowed in his own blood in the midst of the highway.

20:13 When he was removed out of the highway, all the people went on after Joab, to pursue after Sheba the son of Bichri.

20:14 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.

After Amasa's body was removed from the highway, everyone went on to chase after Sheba.
Sheba is decapitated
20:15-26

20:15 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.

When they came to the city of Abel, they beseiged it and began to batter the wall.

20:16 Then cried a wise woman out of the city, Hear, hear; say, I pray you, unto Joab, Come near hither, that I may speak with thee.

20:17 And when he was come near unto her, the woman said, Art thou Joab? And he answered, I am he. Then she said unto him, Hear the words of thine handmaid. And he answered, I do hear.

20:18 Then she spake, saying, They were wont to speak in old time, saying, They shall surely ask counsel at Abel: and so they ended the matter.

Then a woman cried out, saying, "Come hither so I can speak with you."

20:19 I am one of them that are peaceable and faithful in Israel: thou seekest to destroy a city and a mother in Israel: why wilt thou swallow up the inheritance of the LORD?

She then said, "Why are you trying to destroy our city?"

20:20 And Joab answered and said, Far be it, far be it from me, that I should swallow up or destroy.

20:21 The matter is not so: but a man of mount Ephraim, Sheba the son of Bichri by name, hath lifted up his hand against the king, even against David: deliver him only, and I will depart from the city. And the woman said unto Joab, Behold, his head shall be thrown to thee over the wall.

Joab said, "I don't want to destroy it. I just want Sheba. Deliver him and we'll leave your city alone."

The woman said, "Okay. We'll throw his head over the wall."

What the Bible says about decapitation

20:22 Then the woman went unto all the people in her wisdom. And they cut off the head of Sheba the son of Bichri, and cast it out to Joab. And he blew a trumpet, and they retired from the city, every man to his tent. And Joab returned to Jerusalem unto the king.

The woman told all the people her idea.

And they cut off Sheba's head and threw it over the wall to Joab.

Joab blew his trumpet and everyone went home.

20:23 Now Joab was over all the host of Israel: and Benaiah the son of Jehoiada was over the Cherethites and over the Pelethites:

20:24 And Adoram was over the tribute: and Jehoshaphat the son of Ahilud was recorder:

20:25 And Sheva was scribe: and Zadok and Abiathar were the priests:

20:26 And Ira also the Jairite was a chief ruler about David.