promoted a separate cult for the Aten. However, there is no evidence that Amenhotep III neglected the other gods or attempted to promote the Aten as an exclusive deity. Atenist Egypt Amenhotep IV initially introduced Atenism in the fifth year of his reign (1348/1346 BC), raising Aten to the status of supreme god, initially permitting continued worship of the traditional gods. Later Akhenaten forbade the worship of other gods, a radical departure from the centuries of Egyptian religious practice. To emphasise the change, Aten's name was written in the cartouche form normally reserved for Pharaohs, an innovation of Atenism. The religious reformation appears to coincide with the proclamation of a Sed festival, a sort of royal jubilee intended to reinforce the Pharaoh's divine powers of kingship. Traditionally held in the thirtieth year of the Pharaoh's reign, it possibly was a festival in honour of Amenhotep III. Some Egyptologists think that he had a coregency with Amenhotep IV of 2–12 years. The fifth year is believed to mark the beginning of Amenhotep IV's construction of a new capital, Akhetaten (Horizon of the Aten), at the site known today as Amarna. Evidence appears on three of the boundary stelae used to mark the boundaries of this new capital. Then, Amenhotep IV officially changed his name to Akhenaten (Spirit of the Aten) as evidence of his new worship. The date given for the event has been estimated to fall around January 2 of that year. In the seventh year of his reign (1346/1344 BC), the capital was moved from Thebes to Akhetaten, but construction of the city seems to have continued for two more years. In shifting his court from the traditional ceremonial centres, he was signalling a dramatic transformation in the focus of religious and political power. The move separated the Pharaoh and his court from the influence of the priesthood and from the traditional centres of worship, but his decree had deeper religious significance too. Taken in conjunction with his name change, it is possible that the move to Amarna was also meant as a signal of Akhenaten's symbolic death and rebirth. It may also have coincided with the death of his father and the end of the coregency. In addition to constructing a new capital in honor of Aten, Akhenaten also oversaw the construction of some of the most massive temple complexes in ancient Egypt, including one at Karnak and