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 17:9

17:9 At this very moment he is hiding out in one of the caves or in some other similar place. If it should turn out that he attacks our troops first, whoever hears about it will say, ‘Absalom’s army has been slaughtered!’