'Smooth' in the Bible

Yet my people have forgotten me and offered sacrifices to worthless idols! This makes them stumble along in the way they live and leave the old reliable path of their fathers. They have left them to walk in bypaths, in roads that are not smooth and level.

Lo, I am against the prophets, An affirmation of Jehovah, Who are making smooth their tongue, And they affirm -- an affirmation.

They will come weeping,but I will bring them back with consolation.I will lead them to wadis filled with waterby a smooth way where they will not stumble,for I am Israel’s Father,and Ephraim is My firstborn.