When was the word religion invented and what did it originally mean?
The modern concept of religion was invented in the 16th century to distinguish the domain of the church from the domain of civil authorities. Before the Peace of Augsburg in 1555, the Latin term religio referred to conscientiousness, moral obligation, or duty to anything, including family, neighbors, and rulers. The compartmentalized concept of religion where religious and worldly things were separated was not used before the 1500s.