Why were kings and priests the highest class in sumer?

In Sumer, kings and priests occupied the highest social class due to their roles in governance and religious authority. Kings were seen as representatives of the gods on earth, tasked with maintaining order and justice, while priests managed the temples and conducted rituals essential for appeasing deities and ensuring prosperity. This intertwining of political and religious power reinforced their dominance in society and established a hierarchical structure that prioritized their leadership and influence. Consequently, they wielded significant control over resources, laws, and the spiritual lives of the people.