I'm not going to plod through your writings on Romans, which you think applies to us today, but doesn't. Did you say in there that all during Acts, only Israel had the covenants?
In
Romans 9:4, About Acts 20, 58AD, the last book Paul wrote during Acts, the Gentiles, who were part of Israel at that time, did not have the covenants. What makes you think we have them now, when we're NOT part of Israel. Also, note that Gentiles during Acts didn't have the adoption, when means they were't Sons and therefore had no inheritance
Rom 9:4
Who are
Israelites; to whom pertaineth the adoption, and the glory, and
the covenants, and the giving of the law, and the service of God, and the promises;
After Acts, in Paul's last 7 books, there is no mention of Gentiles having the New Covenant. So, in the entire Bible, it never says Gentiles had the New Covenant. When the Bible is silent, we also must be silent.