[FatherofFive]

Well, by your imagination, who was the first Catholic,

That is a non-sequitur and an obfuscation. But Scripture does give us a clue:

“Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by flesh and blood, but by my Father in heaven. And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.” Mat 16:17-18

Since Scripture says Christ built His Church on Peter, I'd guess Peter was the first catholic.

And interesting that Sola Scriptura is never mentioned in Scripture, but was 'revealed' by flesh and blood, ie, Martin Luther - 1500 years removed from Christ.

[philetus]

Matthew was written in Greek. How do you explain that The Greek word for Peter is petros, which means “a pebble” or a small stone. On the other hand, the Greek word that Jesus used for rock is petra, meaning “a massive rock” or bedrock.

[MHGinTN]

You declared, "Since Scripture says Christ built His Church on Peter, I'd guess Peter was the first catholic", and as expected, you are wrong. JESUS and the belief in HIM as activating The Grace of God in Christ Jesus is the rock.

If Augustine explained it to you, would you reconsider your error?