1 Kings 2:5

2:5 “You know what Joab son of Zeruiah did to me – how he murdered two commanders of the Israelite armies, Abner son of Ner and Amasa son of Jether. During peacetime he struck them down like he would in battle; when he shed their blood as if in battle, he stained his own belt and the sandals on his feet.

1 Kings 11:38

11:38 You must obey all I command you to do, follow my instructions, do what I approve, and keep my rules and commandments, like my servant David did. Then I will be with you and establish for you a lasting dynasty, as I did for David; I will give you Israel.