Complex sentence: According to the Canonical gospels, Jesus preached against the growing corruption by religious leaders of the time, and more importantly he spoke against the Jewish ruling class (the Herodians) and King Herod who were appointed by Rome to control the people.
Split into simpler sentences: According to the Canonical gospels, Jesus preached against the growing corruption by religious leaders of the time. More importantly he spoke against the Jewish ruling class (the Herodians) and King Herod who were appointed by Rome to control the people.