because King Herod was a part of the Roman Empire, and the Romans were against the Jews.
King Herod was appointed King of Judea by the Romans in 37 BC.
Romans appointed Herod king in 40 BC
Herod did not have to do much to help the Romans, they did not need it. They were already the overlords of Judea. It was more the other way round; it was the Romans who supported Herod. He just needed to show them he loyal to them. Herod was installed by force by the Romans as an ethanrch, which was a king of a conquered ethnic group. The Roman let the leaders of the conquered areas get on with ruling their areas as long as they were loyal to Rome and paid taxes to the Romans. Herod used Roman support to consolidate his power with brutality. He was unpopular among the Jew of Judea because he was from outside Judea and because his family had been forced to convert to Judaism and some Jews doubted his commitment to this religion, especially considering his decadent lifestyle. As long as Herod managed to maintain power and preserve political stability, the Romans did not interfere. More in particular, Herod had to show he supported Augustus, the first Roman emperor, because during the Final Civil War of the Roman Republic he had supported the opponent of Augustus (who back then was called Octavian) in that war, Mark Antony.
The Temple of Herod.
In 6 BC Augustus deposed Herod Archelaus (one of the sons of Herod the Great) and annexed his territory, Judea (as the Romans called it) and Samaria and Idumea, on the request of the locals because they were fed up with the misrule of the Herodian dynasty. The other sons of Herod the great continued to rule the other territories of Herod the Great's kingdom, Galilee and Perea (Herod Antipater), Iturea,Trachonitisand Gaulanitis, Batanea and Aurantis (Herod Philip II)
When the Romans extended their influence over Judea, they left Herod the Great in charge as the client king. Herod ruled from 37 BCE until his death in 4 BCE and was known for his extensive building projects, including the renovation of the Second Temple in Jerusalem. After Herod's death, Judea was eventually placed under direct Roman administration, leading to a series of governors and procurators. This arrangement allowed Rome to maintain control while utilizing local rulers to manage day-to-day affairs.
King Herod , King of the Jews so he killed all the boys in his land under the age of 2 but Jesus escaped.
the main people who were powerful back then was: Jesus, Herod, The Romans, Tax Collectors and Priests.
Herod became tetrarch in 41 BCE, but lost Palestine to the Parthians in 40 BCE. In 38 BCE, the Romans made him king of Idumea and Samaria, which were back under Roman control. In 37 BCE, Herod conquered Jerusalem and became king of Judea. He died in 4 BCE.
After the death of King Herod, in April 4 BCE, his kingdom was split among his three sons. Archelaus inherited Judaea, Samaria and Idumaea, but was removed by the Romans in 6 CE. Antipas inherited Galilee, while Philip received the territory east of Jordan.
King Herod the Great of Judea was supported by the Romans. Strictly speaking, he was not a Jew, but an Idumean. He is said to have followed the Jewish faith while in Jerusalem and the pagan religion while in Caesaria.