'Stumbling blocks' in the Bible

Therefore thus saith Jehovah, Behold, I will lay stumbling-blocks before this people; and the fathers and the sons together shall stumble against them; the neighbor and his friend shall perish.

I will consume man and beast; I will consume the birds of the heavens, and the fishes of the sea, and the stumblingblocks with the wicked; and I will cut off man from off the face of the ground, saith Jehovah.