'Level' in the Bible

"The path of the righteous is level; O Upright One, you make safe the way of justice.

Every valley will be lifted up, and every mountain and hill will be lowered; the rough ground will become level, and the mountain ridges made a plain.

I'll help the blind walk, even on a road they do not know; I'll guide them in directions they do not know. I'll turn the dark places into light in front of them, and the rough places into level ground. These are the things I will do, and I won't abandon them.

"I myself will go before you, and he will make the mountains level; I'll shatter bronze doors and cut through iron bars.