Campbell have argued that is derived from : (meaning "again") + ("bind" or "connect"), which was made prominent by St. Augustine following the interpretation given by Lactantius in , IV, 28. The medieval usage alternates with order in designating bonded communities like those of monastic orders: "we hear of the 'religion' of the Golden Fleece, of a knight 'of the religion of Avys'". In classic antiquity, broadly meant conscientiousness, sense of right, moral obligation, or duty to anything. In the ancient and medieval world, the etymological Latin root was understood as an individual virtue of worship in mundane contexts; never as doctrine, practice, or actual source of knowledge. In general, referred to broad social obligations towards anything including family, neighbors, rulers, and even towards God. was most often used by the ancient Romans not in the context of a relation towards gods, but as a range of general emotions which arose from heightened attention in any mundane context such as hesitation, caution, anxiety, or fear, as well as feelings of being bound, restricted, or inhibited. The term was also closely related to other terms like (which meant "very precisely"), and some Roman authors related the term (which meant too much fear or anxiety or shame) to at times. When came into English around the 1200s as religion, it took the meaning of "life bound by monastic vows" or monastic orders. The compartmentalized concept of religion, where religious and worldly things were separated, was not used before the 1500s. The concept of religion was first used in the 1500s to distinguish the domain of the church and the domain of civil authorities; the Peace of Augsburg marks such instance, which has been described by Christian Reus-Smit as "the first step on the road toward a European system of sovereign states." Roman general Julius Caesar used to mean "obligation of an oath" when discussing captured soldiers making an oath to their captors. Roman naturalist Pliny the Elder used the term to describe the apparent respect given by elephants to the night sky. Cicero used as being related to (worship of the gods). In ancient Greece, the Greek term () was loosely translated into Latin as in late antiquity. was sparsely used in classical Greece but became more frequently used in the writings of Josephus in the 1st century AD. It was used in mundane contexts and could mean multiple things from respectful