2 Samuel 20:8-10

Contemporary English Version

⁸ They had gone as far as the big rock at Gibeon when Amasa caught up with them. Joab had a dagger strapped around his waist over his military uniform, but it fell out as he started toward Amasa.

⁹ Joab said, “Amasa, my cousin, how are you?” Then Joab took hold of Amasa's beard with his right hand, so that he could greet him with a kiss. ¹⁰ Amasa did not see the dagger in Joab's other hand. Joab stuck it in Amasa's stomach, and his insides spilled out on the ground. Joab only struck him once, but Amasa was dying.

Joab and his brother Abishai went off to chase Sheba.