In his insightful, Freedom of the Christian, Martin Luther writes:
Let us then consider it certain and firmly established that the soul can do without anything except the Word of God and that where the Word of God is missing there is no help at all for the soul. If it has the Word of God it is rich and lacks nothing since it is the Word of life, truth, light, peace, righteousness, salvation, joy, liberty, wisdom, power, grace, glory, and ever incalculable blessing. This is why the prophet in the entire Psalm 119 and in many other place yearns and sighs for the Word of God and uses so many names to describe it…
Luther goes on to describe the Bible as one of the main pillars in the Christian faith. It is a necessary source of nourishment for the Christian. Even the Bible itself attests to this fact. Paul tells us that the scriptures give us encouragement and hope (Rom 15:4). The Psalmists tell us that God’s Word heals (Ps 107:20), and is a constant source of growth and life (Ps 1). Christ himself tells us that we are to live on the very words of God (Mt 4:11). Peter tells us to long and yearn for the scriptures as infants need milk (1 Pet 2:2). Jeremiah says of the scriptures, “Your words were found, and I ate them, and Your words because to me a joy and the delight of my heart. Overwhelmingly, we need the Bible, because it is God’s tool to nourish, sustain, and grow us. It is one of God’s main means to growing his people into the fullness of Christ (Eph 4:13).
But how does the Bible produce this sort of spiritual fruit within us? How does it help us and sustain us in this way?
Luther explains that the Bible does this by revealing to us the saving promises of God in the gospel, and producing faith within us. Luther even goes so far to say that “the Word [itself] is the gospel of God concerning his Son, who was made flesh, suffered, rose from the dead, and was glorified through the Spirit who sanctifies. [The Bible is meant to] feed the soul, make it righteous, set it free, and save it, provided it believes…Faith alone is the saving and efficacious use of the Word of God”.
Luther makes a remarkable point here, that the scriptures are centered around and concerned entirely with the gospel of Christ. I think he’s right; any cursory reading of the Bible will reveal that it doesn’t actually cover everything we need to know. The Bible is concerned with one thing: salvation. And so, the scriptures primarily revolve around the gospel. They center around God’s gracious plan to save sinners, atone for their sins, clothe them in righteousness, adopt them, and make them forever his. Paul tells us this is 2 Corinthians 1:20, that all of God’s saving promises and actions find their fulfillment in Jesus suffering for sinners. In fact, the overwhelming theme of the Old and New Testament is this: “And you shall be my people, and I will be your God” (Jer 30:22). This what the scriptures anticipate, long for, and find their fulfillment in. That God will have a redeemed people for himself in Jesus. And this is why Luther can say that the Bible is, in a very real way, the telling of the gospel itself.
But also, this is why the Bible is a delight, encouragement, nourishment, and a necessary source of growth: because the gospel is the only thing that justifies, sanctifies, and glorifies a sinner (1 Cor 1:30, Rom 16:25). As Luther says, “therefore it is clear that, as the soul needs only the Word of God for its life and righteousness, so it is justified by faith alone and not any works; for if it could be justified by anything else, it would not need the Word, and consequently it would not need faith“. The gospel and the Bible are inextricably bound together. Because as Luther says, the only reason we need the scriptures is because we need the gospel. And because we need the gospel, God gave us the scriptures. Anyone who enjoys the grace of God found in the gospel, will treasure, grow in, be founded upon, and desire fully to read and know the Bible.
God gave us a book to read over and over again, that we might remember again and again who God is, what he does for sinners, and how we are saved through Jesus. It is a book “concerning all things necessary for…man’s salvation, faith and life” (WCF).