Herman Bavinck on sanctification by gospel in the section 'faith and conversion' of his Reformed Dogmatics:
The gospel is the food of faith and must be known to be nourishment. . . . [J]ust as in the natural world every creature seeks the food that suits it, so the new life in the believer is always drawn toward the gospel, the word of Christ . . . as the basis of its support, as the food by which it is strengthened.
--Reformed Dogmatics, 4:96, 103