'Stumbling blocks' in the Bible

And it shall be said, Cast up, cast up, prepare the way, take up the stumbling-blocks out of the way of my people.

Therefore thus saith Jehovah: Behold, I will lay stumbling-blocks before this people, and the fathers and the sons together shall fall over them; the neighbour and his friend shall perish.

In order that the heart may melt, and the stumbling-blocks be multiplied, I have set the threatening sword against all their gates: ah! it is made glittering, it is whetted for the slaughter.

I will take away man and beast; I will take away the fowl of the heavens and the fishes of the sea, and the stumbling-blocks with the wicked, and I will cut off mankind from off the face of the ground, saith Jehovah.