It is in answer to the assertion that Trinitarian theology requires a systematic study of the Scripture to validate. I don't need to try to make the Bible say things it only alludes to, because I accept Holy Tradition as authoritative along with the Bible.
And I don't need to pull sleazy tricks like conflating the Christian Canon with the Old Testament Scripture when quoting Acts, either.
Then i would agree with you that not all of what is Scripture is necessary, but your argument is that Trinitarian theology predates the codification of Scripture, which means that codification of Scripture is necessary, which would mean that the major writings (most of the NT) which received general acceptance before 325AD would not be enough, while if a complete infallible canon is essential in order to ascertain the veracity of a doctrine then RCs had to wait until after the death of Luther.
I don't need to try to make the Bible say things it only alludes to,
That would be refreshing in the light of Cath attempts to make the Bible say what they can only wish it did. Including prayer to created beings in Heaven.
because I accept Holy Tradition as authoritative along with the Bible.
Meaning because you accept Rome as possessing ensured veracity, and thus oral T and Scripture only consist of and assuredly mean what she says they do. Which includes the claim that she uniquely possess ensured perpetual magisterial infallibility.