NET
5 Every valley will be filled, and every mountain and hill will be brought low, and the crooked will be made straight, and the rough ways will be made smooth,
Darby
5 Every gorge shall be filled up, and every mountain and hill shall be brought low, and the crooked [places] shall become a straight [path], and the rough places smooth ways,
KJV
5 Every valley shall be filled, and every mountain and hill shall be brought low; and the crooked shall be made straight, and the rough ways [shall be] made smooth;