What he isn't is a divine saviour, that's purely Christian.
Sadly, this runs contrary to what is taught in various parts of the Hebrew Scriptures, Rose. I appreciate that some forms of Judaism - even at the time of Christ - didn't/don't believe in everything that other forms did, but the idea of a Messiah who would usher in world peace was based on the fact that he would be divine - as only God would be in a position to usher in that situation.
The idea of a purely politico-military Messiah, so beloved of the Zealots of Jesus' time, dated from the 5th/4th century BC, but the idea of Messiah as a saviour sent from God had existed long before that - ie from an era when the people o Israel were in charge of their own destiny and therefore without need of a military saviour. All the references are, furthermore, in a spirtual context.
In Judaism there isn't a concept of being saved, or the alternative of being thrown into a lake of fire. The concept of original sin is missing as well.
Whilst it is true that the concept of original sin is missing, there are plenty of warnings of how those who continue to sin would be cut off from the 'congregation'. I(nterestingly, the concept of being thrown into the fire is originally a Jewish one - or so many of the Jews I've known over the years have told me.
Messiah means anointed and was a human leader, rather than a divine person.
Whilst it is true that the term was applied to various human agents - including Cyrus - it also had a wider meaning that included more than mere human ideas.
Christianity added all the nasty concepts, like hell and eternal damnation and the idea man is inherently evil.
Actually this is only partially true, Rose. The concept of Sheol (Hell) predates Christ by several centuries (and is probably the 'precursor' of the Christian idea of purgatory). Likewise, the idea that mankind is inherently sinful is based on Jewish thinking as well.
Judaism seems to believe man was created in Gods image and had the capacity for both good and evil.
As does Christianity.