“I’m thunder in the desert: ‘Make the road straight for God!’ I’m doing what the prophet Isaiah preached.”
John and his message were authorized by Isaiah’s prophecy: Thunder in the desert! Prepare for God’s arrival! Make the road smooth and straight!
Exasperated, they said, “Who, then? We need an answer for those who sent us. Tell us something—anything!—about yourself.”
Those sent to question him were from the Pharisee party. Now they had a question of their own: “If you’re neither the Messiah, nor Elijah, nor the Prophet, why do you baptize?”