Genesis 12:15

Pharaoh— Was a common name of the AEgyptian kings; and was a title of dignity, like that of Caesar assumed by the Roman emperors, and Ptolemy afterwards among the AEgyptians. Authors disagree about the meaning of it: Josephus says, it signifies the same as king; and Ludolphus says, it imports as much as "father of his country" an appellation well suiting a monarch.