'Rough' in the Bible

Let every valley be lifted up, and every mountain and hill be made low, and let the rough places become level, and the hilltops become a valley,

And I will take the blind by a way of which they had no knowledge, guiding them by roads strange to them: I will make the dark places light before them, and the rough places level. These things will I do and will not give them up.

I will go before you, and make the rough places level: the doors of brass will be broken, and the iron rods cut in two: