First three of the 95 Theses:
1. When our Lord and Master Jesus Christ said, “Repent” [Matt. 4:17], he willed the entire life of believers to be one of repentance.
2. This word cannot be understood as referring to the sacrament of penance, that is, confession and satisfaction, as administered by the clergy.
3. Yet it does not mean solely inner repentance; such inner repentance is worthless unless it produces various outward mortifications of the flesh.