The five solas — Scripture alone, faith alone, grace alone, Christ alone, glory to God alone — are not a Reformation-era formulaic list but a later summary of the theological commitments that drove the sixteenth-century reform. Luther and Calvin articulated these principles in different contexts and with different emphases, but they capture the Reformers' shared conviction that medieval theology had added human merit, ecclesial tradition, and sacramental mechanism to what ought to be simple trust in God's gracious act in Christ.
"The nefarious opinion of the papists, which attributes the merit of grace and the remission of sins to works, must here be emphatically rejected" — Luther on sola gratia and sola fide: works contribute nothing to grace or forgiveness; salvation flows from mercy alone, rejecting any medieval system of merit-based cooperation.
"Here two ends must be kept specially in view, namely, that the glory of God be maintained unimpaired, and that our consciences, in the view of his tribunal, be secured in peaceful rest and calm tranquillity" — Calvin on the dual purpose of the solas: soli Deo gloria ensures grace magnifies God alone, while sola fide secures the believer's assurance before God's tribunal.
Go deeper
Search 1,800+ years of primary sources — Church Fathers, Reformers, councils, and historic theologians.
1 free query per day · No account needed to start