Therefore tell those who cover it with whitewash that it is going to fall. Rain will come in torrents, and I will send hailstones hurtling down, and violent winds will burst forth. (NIV)
Say to them who daub it with whitewash that it shall fall! There shall be a downpour of rain; and you, O great hailstones, shall fall, and a violent wind shall tear apart [the whitewashed, flimsy wall]. (AMP)
Say unto them which daub it with untempered morter, that it shall fall: there shall be an overflowing shower; and ye, O great hailstones, shall fall; and a stormy wind shall rend it. (KJV)