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.