'Served' in the Bible

Nadab and Abihu died {before Yahweh} when they presented a strange fire {before Yahweh} in the desert of Sinai, and {they had no children}. Eleazar and Ithamar served as priest during the presence of Aaron their father.

These [were] those counted of the clans of the Kohathites, everyone who served in the tent of assembly whom Moses and Aaron mustered according to {the command} of Yahweh by the hand of Moses.