If thou wilt use these Words aright, and art in good Earnest, thou shalt certainly find the Benefit thereof. But I desire thou mayest be warned, if thou art not in Earnest, not to meddle with the dear Names of God, in and by which the most High Holiness is invoked, moved, and powerfully desired, lest they kindle the Anger of God in thy Soul. For we must not abuse the Holy Names of God. This little Book is only for those that would fain repent, and are in a Desire to begin. Such will find what Manner of Words therein, and whence they are born. Be you herewith commended to the Eternal Goodness and Mercy of God.
Preface - The Way to Christ (1622)