2 Samuel 20:7

and Benaiah the son of Jehoiada was over the Cherethites and the Pelethites; and the sons of David were priests.

But Abishai the son of Zeruiah helped him, and struck the Philistine and put him to death. Then the men of David swore to him, saying, “You shall not go out again with us to battle, so that you do not extinguish the lamp of Israel.”

And the king said to them, “Take with you the servants of your lord, and have my son Solomon ride on my own mule, and bring him down to Gihon.