When was Osiris worshiped?

Osiris was primarily worshiped in ancient Egypt, with his veneration dating back to around 2600 BCE during the Old Kingdom. His worship continued through the Middle and New Kingdoms and persisted well into the Greco-Roman period, reflecting his significance in Egyptian mythology as the god of the afterlife and resurrection. Temples dedicated to Osiris, such as those in Abydos, became important pilgrimage sites for devotees seeking his blessings.