Exodus 2:16

Priest. Hebrew cohen, (or cen,) means also a prince, as the Chaldean has it. When put in this manner, with the name of a place, it is generally taken in this sense. But formerly kings were also priests. Jethro served the true God, like Job, in the midst of a perverse generation, and offered sacrifice to him, when he joined the camp of the Israelites, Exodus xviii. 11. (Calmet)