Matthew 3:3

Isaiah 40:3 NIV
A voice of one calling: “In the wilderness prepare the way for the Lord ; make straight in the desert a highway for our God.

John 1:23 NIV
John replied in the words of Isaiah the prophet, “I am the voice of one calling in the wilderness, ‘Make straight the way for the Lord.’”

Malachi 3:1 NIV
“I will send my messenger, who will prepare the way before me. Then suddenly the Lord you are seeking will come to his temple; the messenger of the covenant, whom you desire, will come,” says the Lord Almighty.