Isaiah 8:15

And whosoever shall fall on this stone shall be broken: but on whomsoever it shall fall, it will grind him to powder.

But the word of the LORD was unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little; that they might go, and fall backward, and be broken, and snared, and taken.

From that time many of his disciples went back, and walked no more with him.

And he beheld them, and said, What is this then that is written, The stone which the builders rejected, the same is become the head of the corner? Whosoever shall fall upon that stone shall be broken; but on whomsoever it shall fall, it will grind him to powder.

And blessed is he, whosoever shall not be offended in me.

We grope for the wall like the blind, and we grope as if we had no eyes: we stumble at noonday as in the night; we are in desolate places as dead men.

Wherefore? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumblingstone;

Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.

But we preach Christ crucified, unto the Jews a stumblingblock, and unto the Greeks foolishness;