It's a matter of not accepting assertions. I know there were Gentiles there. I've not said that they weren't there you have asserted this your self. Yet no one has the authority to call a Gentile elect. It has never been pronounced by God so why should I believe it. Not to mention it is not salvific. No where does scripture say we must be elect to be saved.A mere assertion that solely Jewish Christians are meant is not evidence that Gentiles are not who are being referred to.
MB