“To have a faith, therefore, or a trust in any thing, where God hath not promised, is plain idolatry, and a worshipping of thine own imagination instead of God.”

The Obedience of A Christian Man (1528)
Context: Where no promise of God is, there can be no faith, nor justifying, nor forgiveness of sins: for it is more than madness to look for any thing of God, save that he hath promised. How far he hath promised, so far is he bound to them that believe; and further not. To have a faith, therefore, or a trust in any thing, where God hath not promised, is plain idolatry, and a worshipping of thine own imagination instead of God. Let us see the pith of a ceremony or two, to judge the rest by. In conjuring of holy water, they pray that whosoever be sprinkled therewith may receive health as well of body as of soul: and likewise in making holy bread, and so forth in the conjurations of other ceremonies. Now we see by daily experience, that half their prayer is unheard. For no man receiveth health of body thereby.
No more, of likelihood, do they of soul. Yea, we see also by experience, that no man receiveth health of soul thereby. For no man by sprinkling himself with holy water, and with eating holy bread, is more merciful than before, or forgiveth wrong, or becometh at one with his enemy, or is more patient, and less covetous, and so forth; which are the sure tokens of the soul-health.