The problem with a concept such as “Holy Tradition” is that it is not scripture and therefore not the inspired word of God.
Not Scripture?
How did Paul tell us that Christ appeared to 500 people at one time? It’s not in any Gospel.
There are other examples where Paul quotes Christ, but we do not see those words in Scripture. Hopefully I can get to that information tomorrow when my wiped-out computer gets put back together.
That’s Holy Tradition.