The annual Opet Festival, during which the bark of Amun—and ultimately those of Mut, Khons, and the king as well—journeyed from Karnak to Luxor, became a central religious celebration of ancient Thebes during the 18th Dynasty. The rituals of the Opet Festival celebrated the sacred marriage of Amun—with whom the king merged—and Mut, resulting in the proper transmission of the royal ka and thus ensuring the maintenance of kingship.