2 Samuel 5:8

5:8 David said on that day, “Whoever attacks the Jebusites must approach the ‘lame’ and the ‘blind’ who are David’s enemies by going through the water tunnel.” For this reason it is said, “The blind and the lame cannot enter the palace.”

2 Samuel 15:20

15:20 It seems like you arrived just yesterday. Today should I make you wander around by going with us? I go where I must go. But as for you, go back and take your men with you. May genuine loyal love protect you!”

2 Samuel 21:17

21:17 But Abishai the son of Zeruiah came to David’s aid, striking the Philistine down and killing him. Then David’s men took an oath saying, “You will not go out to battle with us again! You must not extinguish the lamp of Israel!”