He said: "I am "The voice of one crying in the wilderness: "Make straight the way of the LORD,"' as the prophet Isaiah said."
John 1:23
Surrounding context
1:22 Then they said to him, "Who are you, that we may give an answer to those who sent us? What do you say about yourself?"
1:23 He said: "I am "The voice of one crying in the wilderness: "Make straight the way of the LORD,"' as the prophet Isaiah said."
1:24 Now those who were sent were from the Pharisees.