late 14c., jerarchie, ierarchie, "rank in the sacred order; one of the three divisions of the nine orders of angels;" loosely, "rule, dominion," from Old French ierarchie (14c., Modern French hiérarchie), from Medieval Latin hierarchia "ranked division of angels" (in the system of Dionysius the Areopagite), from Greek hierarkhia "rule of a high priest," from hierarkhes "high priest, leader of sacred rites," from ta hiera "the sacred rites" (neuter plural of hieros "sacred;" see ire) + arkhein "to lead, rule" (see archon). Sense of "ranked organization of persons or things" first recorded 1610s, initially of clergy, sense probably influenced by higher.
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Harper, D. (n.d.). Etymology of hierarchic. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/hierarchic