Everyone today understands the Middle Ages as the consolidation of Christianity in civilization, that is, the consolidation of the concept lf the one God, but it's not that simple; but God was already a "well developed character" by that time; in fact, I dare to say the actual substantial innovation brought and developed by the Middle Ages, and in fact one of its central motifs is the idea of the DEVIL (who was literally the center of the world!). In that sense, Satanism started in medieval times and was not possible beforehand.
