Luke 3:2-6

2during the high-priesthood of Annas and Caiaphas, the word of God came to John son of Zechariah in the wilderness. 3He went into all the country around the Jordan, preaching a baptism of repentance for the forgiveness of sins.

4As it is written in the book of the words of Isaiah the prophet: “A voice of one calling in the wilderness, ‘Prepare the way for the Lord, make straight paths for him.

5Every valley shall be filled in, every mountain and hill made low. The crooked roads shall become straight, the rough ways smooth.

6And all people will see God’s salvation.’ ” Isaiah 40:3-5