5:6 And the king and his men went to Jerusalem unto the Jebusites, the inhabitants of the land: which spake unto David, saying, Except thou take away the {c} blind and the lame, thou shalt not come in hither: thinking, David cannot come in hither.
(c) The children of God called idols blind and lame guides: therefore the Jebusites meant that they should prove that their gods were neither blind nor lame.
5:6 Cannot come - They confided in the strength of their fortifications, which they thought so impregnable, that the blind and the lame were sufficient to defend them, against the most powerful assailant. And probably they set a parcel of blind and lame people, invalids or maimed soldiers, to make their appearance on the wall, in contempt of David and his men.
5:6-10 The enemies of God's people are often very confident of their own strength, and most secure when their day to fall draws nigh. But the pride and insolence of the Jebusites animated David, and the Lord God of hosts was with him. Thus in the day of God's power, Satan's strong-hold, the human heart, is changed into a habitation of God through the Spirit, and into a throne on which the Son of David rules, and brings every thought into obedience to himself. May He thus come, and claim, and cleanse, each of our hearts; and, destroying every idol, may he reign there for ever!