Good works in the context of "Indulgence"

Sola fide, meaning "faith alone," is a Christian doctrine that teaches sinners are forgiven and declared “not guilty” through faith—apart from good works or religious deeds. Protestants traditionally believe that this doctrine of salvation is the cornerstone of Christianity, the very teaching "upon which the church stands or falls".

In classical Protestant theologies, works are the natural evidence of faith, but they do not determine salvation. Confessional Lutheranism sees justification as free forgiveness, received only through faith. Without faith, God's forgiveness is rejected and its benefits are forfeited. Methodism affirms the doctrine of justification by faith alone, but holds that holy living with the goal of Christian perfection (entire sanctification) is essential for salvation; maintenance of sanctification is contingent on continual faith in and obedience to God.

Penance is any act or a set of actions done out of contrition for sins committed, as well as an alternative name for the Catholic, Eastern Orthodox, and Oriental Orthodox sacrament of Reconciliation or Confession.

The word penance derives from Old French and Latin paenitentia, both of which derive from the same root meaning repentance, a sincere change of heart and feeling of remorse (contrition). Penance and repentance, similar in their derivation and original sense, have come to represent conflicting views of the essence of repentance, arising from the controversy in the Protestant Reformation as to the respective merits of "faith" and "good works".