Negative Theses.
Concordia Triglotta, 1921 English text
16 1. Accordingly, we reject and condemn the following modes of speaking: when it is taught and written that good works are necessary to salvation; also, that no one ever has been saved without good works; also, that it is impossible to be saved without good works.
17 2. We reject and condemn as offensive and detrimental to Christian discipline the bare expression, when it is said: Good works are injurious to salvation.
18 For especially in these last times it is no less needful to admonish men to Christian discipline [to the way of living aright and godly] and good works, and remind them how necessary it is that they exercise themselves in good works as a declaration of their faith and gratitude to God, than that the works be not mingled in the article of justification; because men may be damned by an Epicurean delusion concerning faith, as well as by papistic and Pharisaic confidence in their own works and merits.
19 3. We also reject and condemn the dogma that faith and the indwelling of the Holy Ghost are not lost by wilful sin, but that the saints and elect retain the Holy Ghost even though they fall into adultery and other sins and persist therein.