Acts 2:14: But Peter, standing up with the eleven, lifted up his voice, and said unto them, Ye men of Judæa, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words:
Acts 2:25: For David speaketh concerning him, I foresaw the Lord always before my face, for he is on my right hand, that I should not be moved:
Gentiles would not care in the least bit about David - Peter is only speaking to Jews.
II Corinthians 5:20: Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ's stead, be ye reconciled to God.
We are both, royal ambassadors, but also priests with Christ as the High Priest.
We are all members of His Royal Family.
And you can claim anything too, but when it comes to one — Protestant churches are so divided again and again, in fact. When it comes to Holy — I don’t think so when Protestant Churches endorse same-sex marriage and women priests, etc. Catholic — universal — no way do any of the splintered Protestant churches speak for everyone in love. And apostolic, Christ knew he was ascending into heaven and he ordained the apostles by laying hands on them and breathing on them saying, “Receive the Holy Spirit.” If you want to deny that — then I suggest you go back and read your Bible again.