God does not work salvation for fictitious sinners. Be a sinner and sin vigorously... Do not for a moment imagine that this life is the abiding place of justice; sin must be committed.
Martin LutherWhere faith is not continually kept in motion and exercised, it weakens and decreases, so that it must indeed vanish; and yet we do not see nor feel this weakness ourselves, except in times of need and temptation, when unbelief rages too strongly; and yet for that very reason faith must have temptations in which it may battle and grow.
Martin Luther