In this episode of our Summer Equipped Class on the Five Solas, Pastor Matt Castro explores the historical development of Sola Fide—faith alone. We trace how medieval Catholic theology developed a complex sacramental system that conveyed grace through rituals such as baptism and the Eucharist, requiring human cooperation for salvation. Matt explains how the Reformers rejected this synergy, insisting on justification by faith alone in Christ’s work. This episode sets the stage for understanding the core theological conflict of the Reformation and prepares listeners for a deeper biblical discussion in the next session.