Read Timothy.
It makes it clear that scripture was transmitted orally.
Luke, on the other hands says:
1:1 Inasmuch as many have undertaken to compile an account of the things accomplished among us, 1:2 just as they were handed down to us by those who from the beginning were eyewitnesses and servants of the word, 1:3 it seemed fitting for me as well, having investigated everything carefully from the beginning, to write it out for you in consecutive order, most excellent Theophilus; 1:4 so that you may know the exact truth about the things you have been taught.
Note how Peter acknowledges the writings of Paul as being among "all the rest of the Scriptures." Peter says:
2Pe 3:16 (Paul) as also in all his letters, speaking in them of these things, in which are some things hard to understand, which the untaught and unstable distort, as they do also the rest of the Scriptures, to their own destruction.