@Rattigan, so that would imply Jesus = Jehovah (God). Because John the baptizer is commonly accepted to be the preparation for Jesus. The Bible does specify "the Messiah" (Daniel 9, Isaiah) or "my son" (Psalm 2:7) in other places.
"Yahweh Our Righteousness," or "Jehovah Tsidkenu" (יהוה צדקנו), is a name of God that appears in Jeremiah 23:6 which is commonly interpreted to mean Jesus.
You can see the split in thoughts between the "Messiah = God" and "Messiah = son of God" in early writings and still to date, various Jewish groups do not share the same opinion, because you either have to accept the divinity of a Messiah (multiple gods) or a duality/trinity in a single God-person as most Christians and some Muslims groups do.
This idea is older than the Christian faith, it is a 'problem' in any monotheistic group to be able to attribute properties such as a mediator between god and man. Polytheistic religions solve this issue with multiple gods and demi-gods being the interlocutor.