'Blind and the Lame' in the Bible

Then the king and his men advanced to Jerusalem against the Jebusites who lived in the land. The Jebusites said to David, "You cannot invade this place! Even the blind and the lame will turn you back, saying, 'David cannot invade this place!'"

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."