The New Covenant

[Wyrd of Gawd]

i looked for evidence in the old testament that the messiah was to come and save all humanity not just the jews and it wasnt in there in fact in the new testament jesus said that he only came for the jews not the gentiles
In Matthew 15:22-26 A Canaanite woman (a gentile) from that vicinity came to him, crying out, "Lord, Son of David, have mercy on me! My daughter is suffering terribly from demon-possession." Jesus did not answer a word. So his disciples came to him and urged him, "Send her away, for she keeps crying out after us." He answered, "I was sent only to the lost sheep of Israel." The woman came and knelt before him. "Lord, help me!" she said. He replied, "It is not right to take the children's bread and toss it to their dogs."

Jesus calls this woman a dog because she is not the right nationality and he only came for the jews and she was a gentile. jesus identified as the messiah to the jews , prophesied and in and not contradicting the old testament

And then he recognises her faith and heals her daughter:

27 ‘Yes it is, Lord,’ she said. ‘Even the dogs eat the crumbs that fall from their master’s table.’

28 Then Jesus said to her, ‘Woman, you have great faith! Your request is granted.’ And her daughter was healed at that moment.

So Jesus lied about being sent only to the Jews or else he sinned by disobeying his orders.  No wonder he got crucified.