Joab

"(To Abishai) If the Syrians are too strong for me, then you shall help me; but if the people of Ammon are too strong for you, then I will come and help you. Be of good courage, and let us be strong for our people and for the cities of our God. And may the Lord do what is good in His sight."

"And when Joab had gone from David’s presence, he sent messengers after Abner, who brought him back from the well of Sirah. But David did not know it. Now when Abner had returned to Hebron, Joab took him aside in the gate to speak with him privately, and there stabbed him in the stomach, so that he died for the blood of Asahel his brother. Afterward, when David heard it, he said, “My kingdom and I are guiltless before the Lord forever of the blood of Abner the son of Ner. Let it rest on the head of Joab and on all his father’s house; and let there never fail to be in the house of Joab one who has a discharge or is a leper, who leans on a staff or falls by the sword, or who lacks bread.""

"Now David said, “Whoever attacks the Jebusites first shall be chief and captain.” And Joab the son of Zeruiah went up first, and became chief. 7 Then David dwelt in the stronghold; therefore they called it the City of David. And he built the city around it, from the Millo to the surrounding area. Joab repaired the rest of the city."

"And King Solomon was told, “Joab has fled to the tabernacle of the Lord; there he is, by the altar.” Then Solomon sent Benaiah the son of Jehoiada, saying, “Go, strike him down.” So Benaiah went to the tabernacle of the Lord, and said to him, “Thus says the king, ‘Come out!’ ” And he said, “No, but I will die here.” And Benaiah brought back word to the king, saying, “Thus said Joab, and thus he answered me.” Then the king said to him, “Do as he has said, and strike him down and bury him, that you may take away from me and from the house of my father the innocent blood which Joab shed. So the Lord will return his blood on his head, because he struck down two men more righteous and better than he, and killed them with the sword—Abner the son of Ner, the commander of the army of Israel, and Amasa the son of Jether, the commander of the army of Judah—though my father David did not know it."