Complex sentence: According to the Canonical gospels, Judas pointed out Jesus to Jerusalem's Temple authorities, who handed Jesus over to Pontius Pilate, representative of the occupying Roman Empire, for crucifixion.
Split into simpler sentences: According to the Canonical gospels, Judas pointed out Jesus to Jerusalem's Temple authorities. They in turn who handed Jesus over to Pontius Pilate (representative of the occupying Roman Empire), for crucifixion.