[OLD REGGIE]

Yes. Of course. No New Testament scripture existed for decades after the Pentecost. What do you think St. Paul based his letters on?

I don't know of any instance where he based his writing on "The Sacred Deposit Of Faith". Do you?

[annalex]

Every single one of St. Paul’s doctrines must have come from the eleven Apostles, since Paul’s encounter with the risen Christ is described in full and did not contain any teaching.