The Hebrew word melukah means kingship, royalty, or kingly rule. It derives from the root malak (H4427, to reign, be king) and denotes the office, authority, and dignity of royal rule. Unlike mamlakah (H4467) which emphasizes the realm or territory, melukah focuses on the act and authority of reigning.
The melukah concept is central to Israel's identity as a kingdom of priests. God told Israel they would be a melukah of priests and a holy nation (Exodus 19:6) — combining royal authority with priestly service. When Israel later demanded a human king, Samuel warned them about the ways of the melukah — the demands that earthly kingship would place on them. The tension between divine kingship and human kingship runs throughout the Old Testament, culminating in the Messiah who perfectly unites both royal authority and priestly service.