Theopator (Ancient Greek: Θεοπάτωρ), meaning "one who has a father who is a god", is a title used by Hellenistic, Roman, and Parthian rulers.[1] The term was also used in Christian literature, but not with the same meaning, it meant "father of God" and was used to describe the relationship of blood between David (David Theopator) and Jesus. (see Davidic line).[1]