Weakened priestly power: Akhenaten's reforms centralized the worship of Aten under his authority and reduced the role and authority of the traditional priesthood. This diminished their influence in religious ceremonies, rituals, and practices, as well as their control over religious and economic resources.
Disruption of traditional rituals: The introduction of new rituals and the closure of temples dedicated to other gods disrupted the established religious practices and traditions. This was met with resistance from the priesthood, who saw their customary practices being challenged and replaced.
Transfer of temple wealth: Akhenaten diverted resources and wealth from traditional temples to support the worship of Aten. This reallocation of resources away from the control of the priesthood further eroded their economic and political power.
Persecution of traditional beliefs: Akhenaten's suppression and criticism of traditional beliefs, including the veneration of other gods, was seen as an attack on the religious heritage of Egypt. This drew the ire of the priests, who were dedicated to preserving and upholding traditional religious practices.