Herod was born into a politically influential Idumean family. His father, Antipater, gained authority in Judea during the struggles that brought Roman power into the region. Herod rose as a capable but ruthless political leader, relying on Roman support to advance his position.
The Roman Senate designated Herod king in 40 BC, but he had to secure his kingdom by force. With Roman military assistance he captured Jerusalem in 37 BC, ending the rule of the last Hasmonean king, Antigonus Mattathias.
Herod governed a diverse population while trying to satisfy Rome and maintain control of Jewish religious and political institutions. His reign brought major construction, including the expansion of the Second Temple, the port city of Caesarea Maritima, and fortresses such as Masada and Herodium.
His achievements were accompanied by suspicion and brutality. He ordered the execution of political opponents and members of his own family, including his wife Mariamne I and several sons. Disputes over succession troubled his final years.
According to Matthew, eastern visitors came to Jerusalem seeking the newborn king of the Jews. Matthew portrays Herod as fearing a rival and ordering the killing of young boys in Bethlehem. This episode is recorded in Matthew but not independently confirmed by Josephus.
Herod died in 4 BC according to the chronology followed by most historians. His kingdom was divided among his surviving sons under Roman oversight.