Ephesians is very clear. Perhaps you will argue that Peter was not an apostle or the Gentiles are not included in the church that Messiah is building.
I don’t know what Peter being an Apostle ... or ... Gentiles being saved has to do with — Jesus building the “assembly of the saved ones,” based on the fact that “he is the Messiah of Israel” (namely, the one promised by God to bring salvation to all).
I’m not a Jew, by the way ... :-) ... but a Gentile who is in the assembly of the saved ones, by virtue of the fact that Jesus is the Messiah of Israel, and I have accepted the Salvation provided by him in that regard, per the Scriptures.