Verses with the word stumblingblocks in the Old Testament (2 verses):

Jeremiah 6:21
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.

Zephaniah 1:3
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.