[fortes fortuna juvat]

Hope this helps.
...................................
It doesn’t, because quoting Scripture and those who wrote it doesn’t answer my questions. And you failed to identify any writings of the other people you mentioned or where exactly this New Testament church was established, although I suppose that would be difficult since today those who claim to belong to that church commonly state that it has always been “invisible”!

[MHGinTN]

It is common for Catholic apologetics to conflate the one true Church (Ekklesia/ body of ALL believers) with the Catholicism Org church. Because of that error it is hard for some Catholics (dare I say MOST Catholics) to identify that which is a SPIRITUAL BODY here on earth that is the one true church. Jesus is returning in the air soon to takeaway THAT one true church / bride of Christ / body of ALL believers since Peter preached on the Day of Pentecost.

Mental conflation of the ORG of Catholicism, with the real spiritual One True Church is a very devious methodology for deceiving people. You wouldn't want to do that.

It is The One True SPIRITUAL EKKLESIA which Jesus is coming soon to snatch away and return to the Father's House for seven plus year stretch of business in Heaven. After that He will be bringing the born agains who have received new bodies and new behavior mechanisms, bringing us along to clean up the mess caused by the antichrist and the demons supporting him. We will PHYSICALLY appear with Him at touch down on the Mount of Olives.

[daniel1212]

Actually Catholic Marian devotion is one of the many distinctive Catholic teachings that are not manifest in the only wholly inspired substantive authoritative record of what the NT church believed (which is Scripture, in particular Acts through Revelation, which best shows how the NT church understood the gospels).

Hope this helps. ................................... It doesn’t, because quoting Scripture and those who wrote it doesn’t answer my questions.

What?! Quoting Scripture and those who wrote it doesn’t answer my questions as to what the NT church believed? You do know that "NT" refers to New Testament" do you not?

And you failed to identify any writings of the other people you mentioned

I did? Ever hear of Acts thru Revelation? What other people did I mention?

or where exactly this New Testament church was established,

I did? Try reading the source i pointed you to. It's all there.

although I suppose that would be difficult since today those who claim to belong to that church commonly state that it has always been “invisible”!

A false dilemma. You had better belong to that invisible mystical body of Christ your own modern church states that trinitarian baptized Bible Christians are part of (which even a few Catholics are in), and which (to reiterate) is the only one true church since it alone always and and only uniquely consists 100% of true believers. And which the Spirit baptizes every believer into, (1Co. 12:13) and to which body the Lord is married and which the Lord promised would overcome the gates of Hell, while organic fellowships in which they express their faith inevitably become admixtures of wheat and tares, with Catholicism and liberal Protestantism being mostly the latter.

The degree that a visible church retains and preaches the convicting gospel of grace, of salvation by grace thru heart-purifying, justifying effectual faith, (Acts 10:43; 15:7-9) determines how many are part of the only one true church of Scripture.

[Elsie]

It doesn’t, because quoting Scripture and those who wrote it doesn’t answer my questions.

Golly!

Just like...

… referring to tradition, and those who came up with it, doesn't answer ours.