2 Samuel 20:21

21 The matter [is] not so; for a man of the hill-country of Ephraim -- Sheba son of Bichri his name -- hath lifted up his hand against the king, against David; give ye up him by himself, and I go away from the city.' And the woman saith unto Joab, `Lo, his head is cast unto thee over the wall.'

2 Samuel 20:21 Meaning and Commentary

2 Samuel 20:21

The matter [is] not so
I am not come with the army against this city with any ill will to it, and with an intention to destroy it: the case is this,

but a man of Mount Ephraim, Sheba the son of Bichri by name;
for though he was by birth a Benjaminite, his dwelling was in Mount Ephraim in that tribe; unless there was a place of this name in the tribe of Benjamin, so called from any memorable event there, as the wood of Ephraim, ( 2 Samuel 18:6 ) . This same man, says Joab,

hath lifted up his hand against the king, [even] against David;
is in rebellion against the king, even so great and good a king as David; he has lifted up his hand, and blown a trumpet to draw off men from David, and after himself; he has committed acts of hostility and treason; he has drawn his sword, and raised an insurrection and rebellion in the nation:

deliver him only, and I will depart from the city:
he did not desire any of his followers to be delivered up, only himself, knowing the rebellion would cease upon the delivery of him; and being unwilling that the blood of any Israelite should be shed, whom he had unawares drawn into this rebellion, and who he knew would return to their own cities upon this:

and the woman said unto Joab, behold, his head shall be thrown to thee
over the wall;
she knew the fright the inhabitants of the city were in, and how disposed they were to do anything to save their city; she knew what influence she had among them, and how weak Sheba's party was, and therefore could assure Joab that this should be done.

2 Samuel 20:21 In-Context

19 I [am] of the peaceable -- faithful ones of Israel; thou art seeking to destroy a city, and a mother in Israel; why dost thou swallow up the inheritance of Jehovah?
20 And Joab answereth and saith, `Far be it -- far be it from me; I do not swallow up nor destroy.
21 The matter [is] not so; for a man of the hill-country of Ephraim -- Sheba son of Bichri his name -- hath lifted up his hand against the king, against David; give ye up him by himself, and I go away from the city.' And the woman saith unto Joab, `Lo, his head is cast unto thee over the wall.'
22 And the woman cometh unto all the people in her wisdom, and they cut off the head of Sheba son of Bichri, and cast [it] unto Joab, and he bloweth with a trumpet, and they are scattered from the city, each to his tents, and Joab hath turned back to Jerusalem unto the king.
23 And Joab [is] over all the host of Israel, and Benaiah son of Jehoiada [is] over the Cherethite, and over the Pelethite,
Young's Literal Translation is in the public domain.