Obviously when Paul wrote his letter to the Romans the only Scripture in existence was the "Old Testament".
Though the Catholic Church and the Protestants have maintained their versions the "oracles of God" was, is, and always will be be entrusted to the Jews.
We do not need any Chriistian Church to maintain the Tanach.
The "Biblical Unitarians"
The Unitarians believe that they don't need anything to maintain anything. What a bunch of clueless maroons!
1. Have you read Matthew? You don't see the part where Jesus gives Simeon a different name -- Petros/Kepha/Piotr/Pierre? And don't you know that Petros/Kepha/Pierre means ROCK? Simeon was his original name and is from Hebrew שִׁמְעוֹן Šimʻôn, meaning "he [God] has heard." Yet in
Matthew 16:18And I tell you that you are Kepha/Petros/Petra/Rock/Peter,[c] and on this kepha/petra/rock I will build my church, and the gates of Hades[d] will not overcome it.[e] 19I will give you the keys of the kingdom of heaven; whatever you bind on earth will be[f] bound in heaven, and whatever you loose on earth will be[g] loosed in heaven
Now the arguments about Petra vs Petros
Petra means rock and is feminine in origin --> for someone like you, quix who may know only English, it's difficult to understand languages that give gender to inanimate objects
But they do -- all Indo-European languages except English DO have this Genders for inanimate objects
the gospel writer translting to Greek from Aramaic/hebrew can't call Simeon a girl's name "Petra" so he uses the masculine version of that name "Petros".
Jesus never called Peter “Petros,” or “Petra.” He called him Cephas, a name also used by Paul. Koine Greek, throughout the Old Testament Greek, always uses “Petra” for rock; when he translated “Cephas” into Greek, however, Matthew chose “Petros,” the male form of the word.
“Petros” is not a diminuitive of “Petra,” and occurs as such in no Christian writing.
To make petra into a man's proper name, you have to switch it to a masculine declension, so it becomes "Petros". Jesus could not have named Simon "Petra" if he'd wanted to, so the argument that there's some significance in him not naming him "Petra" is evidence of not understanding how languages use gender for inanimate objects