Ezekiel 13:10

One built up a wall - A true prophet is as a wall of defense to the people. These false prophets pretend to be a wall of defense; but their wall is bad, and their mortar is worse. One gives a lying vision, another pledges himself that it is true; and the people believe what they say, and trust not in God, nor turn from their sins. The city is about to be besieged; it needs stronger fortifications than what it possesses. The prophet should be as a brazen wall for its defense; and such my prophets would have been had the people received the word from my mouth. But ye have prevented this by your lying vanities; and when you have perverted the people, you pretend to raise up a rampart of specious prophecy, full of fine promises, for their defense. What one false prophet says, another confirms; and this is like daubing over a bad wall with bad mortar, which prevents its blemishes and weaknesses being discovered, though it has no tendency to strengthen the building.

Wall - A partition wall; in Ezekiel 13:12, the word used is the usual word for the outer wall of a house or city. The fall of the partition wall would perhaps involve the fall of the whole house.

Untempered morter - Or, whited plaster, employed to patch up a wall, so as to give it an appearance (without the reality) of strength and beauty. Compare Matthew 23:27. In the original there is a play upon a word rendered "folly" in Jeremiah 23:13.

13:10 Peace - They told sinners, no harm would happen to them.And those are the most dangerous seducers, who suggest to sinners that which tends to lessen their dread of sin, or their fear of God.These are compared to men who build a slight tottering wall, which others daub with untempered mortar; sorry stuff, that will not bind, nor hold the bricks together: doctrines not grounded on the word of God.