Mark 2:6

But certain of the scribes — See whence the first offence cometh! As yet not one of the plain unlettered people were offended. They all rejoiced in the light, till these men of learning came, to put darkness for light, and light for darkness. Wo to all such blind guides! Good had it been for these if they had never been born. O God, let me never offend one of thy simple ones! Sooner let my tongue cleave to the roof of my mouth!