Why did kings believe they could rule?

Kings often believed they could rule based on the concept of divine right, which posited that their authority was granted by God. This belief legitimized their power and justified their rule over the people, suggesting that rebellion against the king was akin to rebelling against divine order. Additionally, hereditary succession reinforced this notion, as ruling families claimed their lineage provided them with an inherent right to govern. Ultimately, these ideas helped to maintain social order and secure loyalty from subjects.