One thing, and one alone, is necessary for life, justification, and Christian liberty; and that is the most holy word of God, the Gospel of Christ, as He says, "I am the resurrection and the life. Whoever believes in me, though he die, yet shall he live." (John 11:25), and also, "if the Son sets you free, you will be free indeed." (John 8:36), and, "'Man shall not live by bread alone, but by every word that comes from the mouth of God." (Matt. 4:4).
Let us therefore hold it for certain and firmly established that the soul can do without everything except the word of God, without which none at all of its wants are provided for. But, having the word, it is rich and wants for nothing, since that is the word of life, of truth, of light, of peace, of justification, of salvation, of joy, of liberty, of wisdom, of virtue, of grace, of glory, and of every good thing. It is on this account that the prophet in a whole Psalm (Psalm 119), and in many other places, yearns and sighs for the word of God with so many groanings and words.