Protestant thought refers to the beliefs and ideas that emerged from the Protestant Reformation in the 16th century. This movement, initiated by figures like Martin Luther and John Calvin, emphasized the authority of the Bible over church traditions and the importance of individual faith. It led to the formation of various denominations, each interpreting Christian teachings in unique ways. Central to Protestant thought is the concept of salvation by faith alone, rejecting the notion that good works can earn divine favor. This perspective encourages personal interpretation of scripture and a direct relationship with God, shaping the spiritual landscape of many Christian communities today.