12That we should be to the praise of his glory, who first trusted in Christ.
13In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise
Those verses? What about them?
If you are hanging your whole premise on the wording that Paul is not saying you had to be baptized, then what about Christ saying in Mark 16:15-16
15 And he said unto them, Go ye into all the world, and preach the gospel to every creature.
16 He that believeth and is baptized shall be saved; but he that believeth not shall be damned
So Jesus Himself is saying, go to everyone, and those who believe and are baptized are saved....
But where should they go? Only to the Jews?? Nope.... To the whole word....
BUT WAIT!!!! The exact same word πιστεύω (belived) is used in each.
Now show me, where does it say Gentiles do not have to be baptized? I just showed you where Christ said ALL PEOPLE have to be baptized.