Now in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being governor of Judea, and Herod being tetrarch of Galilee, and his brother Philip tetrarch of the region of Ituraea and Trachonitis, and Lysanias tetrarch of Abilene,
And the word "tetrarch" means a ruler of a fourth part. And when Herod the Great died, he left the ruling of that area, they divided it into four, and three of his sons ruled over a part of the area. So a tetrarch was a ruler of a fourth part, and Philip the tetrarch of Iturea, Herod the tetrarch of Galilee,