This document summarizes key aspects of the Protestant Reformation, including the imperfections of early reformers like Luther and Calvin, and the "five solas" they rediscovered: 1) Sola Scriptura - Scripture as the supreme authority over church and human reason 2) Sola Gratia - Salvation by grace alone, not works, as a gift from God through faith 3) Sola Fide - Justification by faith alone through trusting in Christ's atonement, not works 4) Solus Christus - Christ alone as mediator between God and humanity 5) Soli Deo Gloria - Glory to God alone based on who He is and what He has