'Stumbling blocks' in the Bible

Therefore thus saith the LORD, Behold, I will lay stumblingblocks before this people, and the fathers and the sons together shall fall upon them; the neighbour and his friend shall perish.

I will consume man and beast; I will consume the fowls of the heaven, and the fishes of the sea, and the stumblingblocks with the wicked; and I will cut off man from off the land, saith the LORD.