"Examine yourselves, whether you are in the faith." 2 Corinthians 13:5. Doubtless, many who profess faith in Jesus Christ are dangerously mistaken in regard to their own character, and although they draw around themselves the form of Christianity, they are strangers to its transforming efficacy, its living influence, and heavenly consolations. The trial of our graces or religious affections is all-important—for as they are, so is our prospect for a happy and glorious eternity. We must judge of our faith by examining its foundation; we must scrutinize our hearts in the light of divine truth and ascertain and demonstrate whether our affections are holy. To the test we must come and by the truth, we must be judged. Our eternal happiness stands or falls with our sincerity; bring your hearts, therefore, to the trial. With the vivid, exhortative style distinctive of the English Puritans, John Flavel's Touchstone offers a straightforward and biblical aid to discerning true Christian graces, from false.