Two possibilities...

[Angrboda]

Again the point being that all men are falliable including the Great Peter and Paul, and every 'pope' or other religious leader since the church was first established. Which is why we must make a great divide between the religions of man, and the prescribed worship of God. If the religions of man is not directly supported by the bible then that religion no matter how old or 'traditional' is not following the prescribed worship God Himself places in the bible. Therefore that action/worship can not be considered Offical Christian Worship. Does all worship need be 'official' or it is considered a sin? No, absolutely not. Just so long as it does not violate any of the established sin/laws.

(emphasis mine)

Yet what was in the bible was decided by the traditions of man. Were it not for specific traditional decisions about what to include in the bible, we would have a view of God that differs from the one you preach. You're dealing from both sides of the deck. You can't claim tradition doesn't matter and then turn around and claim that the correct view of God rests on the bible. The bible itself rests on tradition.