There is a permanent relationship between faith and the Word. He could not separate one from the other any more than we could separate the rays from the sun from which they come… If faith turns away even in the slightest degree from this goal toward which it should aim, it does no keep its own nature, but becomes uncertain credulity and vague error of mind. The same Word is the basis whereby faith is supported and sustained; if it turns away from the Word, it falls. Therefore, take away the Word and no faith will then remain.
John Calvin, Institutes of the Christian Religion, Book IV, chapter 2