Where in the Bible does it say that all doctrine is in the Bible?
And for that matter, where is Luther's, "the Bible alone" theory in the Bible?
FWIW, the saints in heaven are mediators, at least according to the Bible.
Revelation 5:8And when he had taken it, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp and they were holding golden bowls full of incense, which are the prayers of the saints.
Revelation 5:8 And when he had taken it, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp and they were holding golden bowls full of incense, which are the prayers of the saints.
I have trouble understanding why a large number of anti-Catholics will fervently ask people on earth to pray for them, their families, friends, etc., but believe it's insane to ask the same of those in heaven who lived righteous lives and are with God.