“If a teaching isn’t explicit in the Bible, then we don’t accept it as doctrine!” isn’t that a misconception of sola scriptura ? My understanding is every doctrine needed for Salvation is contained in the Scriptures.
According to Paul, the spoken words of the apostles were the word of God. In fact, when Paul wrote his second letter to the Thessalonians, he urged Christians there to receive the oral and written Traditions as equally authoritative. This would be expected because both are the word of God:
So, then, brethren stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter. (2 Thess. 2:15)