The Nature of True Faith from Luther in Boehm

"Quote from Luther in Boehm’s intro to Ardnt:
(10.) " Many, (says he) when they hear the gospel, frame unto themselves a thought, which says, I believe. This thought of theirs being excited by their own strength, is counted by them true faith: Whereas it is their own fiction and cogitation leaving no experimental impression at all upon the heart. And as it is but a human business, so it is not followed neither be any good work, nor amendment of life. But true faith is a divine work within us, whereby we are changed and born anew of God. It mortifies the old Adam, and makes us quite other men, in heart, in mind, in temper, and in all the faculties of our soul, bringing along with it the Holy Spirit of God. 0h, it is certainly a lively, active, operative, and mighty work to have faith! So that it is altogether impossible for it, not to be constantly employed about some good thing or other. Nor doth faith ask a while, whether one ought to do good works; for it hath done them before one can ask, and is continually employed about doing. He therefore who is destitute of such works, is for certain a faithless man or downright unbeliever. "