The Christian part of the Bible has little to NO relevance to Jews.
Wrong, Nick: Jesus made it very clear that what he taught had as much relevance to the Jews as it did to everyone else. Nowhere did he suggest that what he was teaching was purely for the Gentiles; nor did he ever teach that it was purely for the Jews. On a number of occasions he pointed out that he was 'for the world' eg I am the light of the
world (John 8 ); in John 4 he says: ‘Everyone who drinks this water will be thirsty again, but
whoever drinks the water I give them will never thirst. Indeed, the water I give them will become in them a spring of water welling up to eternal life.’ There is no reference to a particular race or nation here. In John 6 he says: 'For the bread of God is the bread that comes down from heaven and gives life to the
world.’ In the next chapter he says: ‘Let
anyone who is thirsty come to me and drink.
Whoever believes in me, as Scripture has said, rivers of living water will flow from within them.’ In chapter 11 he talks about how ‘I am the resurrection and the life.
The one who believes in me will live, even though they die; and
whoever lives by believing in me will never die.' At no point was there a statement that any of his teaching only applied to the Jews.
I accept that several of these would have been said to Jewish people, but when the context of his teaching is taken into account - to Gentiles and to Jews - it is clear that he is saying that these are global truths for the totality of humanity. Certainly the original apostles came to understand them as such.