'Slippery' in the Bible

Let their way be dark and slippery, And the angel of Jehovah pursuing them.

Surely thou settest them in slippery places: Thou castest them down to destruction.

Wherefore their way shall be unto them as slippery places in the darkness: they shall be driven on, and fall therein; for I will bring evil upon them, even the year of their visitation, saith Jehovah.