Straight

Luke 3: 4

...as it is written in the book of the words of the prophet Isaiah: “A voice of one crying out in the desert: ‘Prepare the way of the Lord, make straight his paths.

Note: This verse has been misunderstood for a good while. It's "...make straight HIS paths."  Not so much to straighten up your ways, but make things straight about the ways of Jesus.