3  John went into all the region around the Jordan, proclaiming a baptism of repentance for the forgiveness of sins, 4  as it is written in the book of the words of the prophet Isaiah, ‘The voice of one crying out in the wilderness: ‘Prepare the way of the Lord, make his paths straight. 5  Every valley shall be filled, and every mountain and hill shall be made low, and the crooked shall be made straight, and the rough ways made smooth; 6  and all flesh shall see the salvation