John 5
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John 5:27 “and He gave Him authority to execute judgment, because He is the Son of Man.”
God the Father has all authority over everything, and God the Son has all authority over everything.
Jesus was sent into the world temporarily to live in a human body, but He did not have to speak in the authority of anyone else, like you and me. That’s silly, because He is always the Eternal Father and Almighty God.
God the Father appointed to Jesus in His human form, to have authority in Himself over everything, because, He is the Messiah who represents God the Father exactly.