(sacred tradition is found all over yhe new testament, and was handed down decades before the new testament was written, and centuries before the canon was itself collected by apostolic authority and approved by the pope of rome in 381-2 at the council of rome!)
examples
Matthew 4:4
But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God. (every word the apostles heard from Christ)
mt 17:5 While he yet spake, behold, a bright cloud overshadowed them: and behold a voice out of the cloud, which said, This is my beloved Son, in whom I am well pleased; hear ye him.
mt 16:16-17
16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven.
Lk 11:28 blessed are they that hear the word of God, and keep it.
acts 2:22 Ye men of Israel, hear these words...
acts 4:31 and they spake the word of God with boldness.
1 cor 11:23 as I received of the Lord I have handed down to you...
1 thes 2:13 For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.
2 thes 2:15 Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.
thks