Lets read through Acts 10. I
Recommend this brief article on the God-fearers http://en.m.wikipedia.org/wiki/God-fearer , pay special attention to the section on their theological significance. The further sections on Noahidism are fascinating.
Let spend some time looking at what it would have meant to include people into The Way who were not circumcised or observed kosher dietary practices. What would you give up in the Church in order to welcome people, what can't be lost?