If the olive tree is Israel, how are we grafted in with a different church? Think it through.
11 I say then, have they stumbled that they should fall? Certainly not! But through their fall, to provoke them to jealousy, salvation has come to the Gentiles.
This replaces the grafting in as shown in Genesis. Gentiles had to first bless Israel. Then males had to be circumcised and they had to keep the covenant and the law of Moses. That is grafting in.