Some corrections.
You say that Jesus came to the Jews and the gentiles but if you read your Bible you will see that Jesus said he only came for the lost sheep of Israel.
Matthew 15:24
But he answered and said, I am not sent but unto the lost sheep of the house of Israel.
Gentiles were grafted in after the Israelite's were broken off because of unbelief.
You can read about this in Romans 11:11-24
Lost sheep of israel, are those who are born again. What's your point with Romans. The bible is all about saving the world, read paul's letter.