The Second Helvetic Confession (Ch. I)

Of the Holy Scripture Being the True Word of God#

We believe and confess the canonical Scriptures of the holy prophets and apostles of both Testaments to be the true Word of God, and to have sufficient authority of themselves, not of men. For God himself spake to the fathers, prophets, apostles, and still speaketh to us through the Holy Scriptures.#

And in this Holy Scripture, the universal Church of Christ has the most complete exposition of all that pertains to a saving faith, and also to the framing of a life acceptable to God; and in this respect it is expressly commanded by God that nothing be either added to or taken from the same.#