Question: Was Herod the king jealous that baby Jesus was born? Why?
Yes. Herod was a puppet king, placed in power by the Roman Empire. But he was a king non-the-less, and like most kings he wanted more power not less power. Then out of the east come some wise men on pimped out camels and fancy gifts, and these guys didn’t come to see king Harod, they came to see some other king. Can you imagine what he was thinking? Another king?!? Here?!?!
Jesus represented a new Kingdom, and his coming (though misunderstood) represented a threat to other powers, be they kings like Herrod, or spiritual authorities like the Pharisees and teachers of the law later in the gospel. It was more than just jealousy that Harod felt as he ordered the massacre of hundreds of babies in Jerusalem, it was fear. Fear of losing what was most important to him, his power.