Note Note 4 — CHAPTER 18.
Reading edition
4. Tetrarch.—This title by derivation of the term and as originally used was applied to the ruler of a fourth part, or one of four divisions of a region that had formerly been one country. Later it came to be the designation of any ruler or governor over a part of a divided country, irrespective of the number or extent of the fractions. Herod Antipas is distinctively called the tetrarch in Matt. 14:1; Luke 3:1, 19; 9:7; and Acts 13:1; and is referred to as king in Matt. 14:9; Mark 6:14, 22, 25, 26.