The religious gatekeepers felt profoundly threatened by Jesus because He didn't fit into any of their categories (
It's fascinating that the Jewish leaders don't attack His teaching or His character because there was nothing to attack. So they go after His authority. That same attack has been made many times since then.
Note that our Lord answered this attacking question with a question of His own about John's baptism (
Where did his authority come from? Since Jesus was sent by the Father, His authority came from God. That's why He didn't have to appeal to human tradition or to the opinions of fallible men. He spoke the truth because He is the truth (
To this day religious types still have problems with Jesus because He doesn't fit their categories. But never mind them. As Jesus himself said, "Heaven and earth will pass away, but my words will never pass away" (
Jesus is the Final Authority.
Taken from "Who Gave You This Authority?" by Keep Believing Ministries (used by permission).