How can Jesus be mediator between God and man if he is God himself?

Jehovah's Witnesses teach that Jesus is mediator between Jehovah and man. "WHILE Jesus is often called the Son of God in the Bible, nobody in the first century ever thought of him as being God the Son. Even the demons, who “believe there is one God,” knew from their experience in the spirit realm that... show more Jehovah's Witnesses teach that Jesus is mediator between Jehovah and man.

"WHILE Jesus is often called the Son of God in the Bible, nobody in the first century ever thought of him as being God the Son. Even the demons, who “believe there is one God,” knew from their experience in the spirit realm that Jesus was not God. So, correctly, they addressed Jesus as the separate “Son of God.” (James 2:19; Matthew 8:29) And when Jesus died, the pagan Roman soldiers standing by knew enough to say that what they had heard from his followers must be right, not that Jesus was God, but that “certainly this was God’s Son.”—Matthew 27:54.
Hence, the phrase “Son of God” refers to Jesus as a separate created being, not as part of a Trinity. As the Son of God, he could not be God himself, for John 1:18 says: “No one has ever seen God.”—RS, Catholic edition.
The disciples viewed Jesus as the “one mediator between God and men,” not as God himself. (1 Timothy 2:5) Since by definition a mediator is someone separate from those who need mediation, it would be a contradiction for Jesus to be one entity with either of the parties he is trying to reconcile. That would be a pretending to be something he is not.
The Bible is clear and consistent about the relationship of God to Jesus. Jehovah God alone is Almighty. He created the prehuman Jesus directly. Thus, Jesus had a beginning and could never be coequal with God in power or eternity."

What do you think?
13 answers 13