Mark 1:2-5

as the prophet Isaiah wrote: “I will send my messenger ahead of you, who will prepare your way.” “This is a voice of one who calls out in the desert: ‘Prepare the way for the Lord. Make the road straight for him.’ ” John was baptizing people in the desert and preaching a baptism of changed hearts and lives for the forgiveness of sins. All the people from Judea and Jerusalem were going out to him. They confessed their sins and were baptized by him in the Jordan River.