New Revised Standard Version
He said, “I am the voice of one crying out in the wilderness, ‘Make straight the way of the Lord,’” as the prophet Isaiah said.

Contemporary English Version
John answered in the words of the prophet Isaiah, "I am only someone shouting in the desert, 'Get the road ready for the Lord!'"

New American Bible
He said: “I am ‘the voice of one crying out in the desert, “Make straight the way of the Lord,” ’ as Isaiah the prophet said.”

Douay-Rheims Bible
He said: I am the voice of one crying in the wilderness, make straight the way of the Lord, as said the prophet Isaias.

He said: I am the voice of one crying in the wilderness, make straight the way of the Lord, as said the prophet Isaias.

I am.

John 3:28 You yourselves do bear me witness that I said that I am not Christ, but that I am sent before him.

Matthew 3:3 For this is he that was spoken of by Isaias the prophet, saying: A voice of one crying in the desert, Prepare ye the way of the Lord, make straight his paths.

Mark 1:3 A voice of one crying in the desert: Prepare ye the way of the Lord; make straight his paths.

Luke 1:16,17,76-79 And he shall convert many of the children of Israel to the Lord their God. . . .

Luke 3:4-6 As it was written in the book of the sayings of Isaias the prophet: A voice of one crying in the wilderness: Prepare ye the way of the Lord, make straight his paths. . . .

as said.

Isaiah 40:3-5 The voice of one crying in the desert: Prepare ye the way of the Lord, make straight in the wilderness the paths of our God. . . .