'Unbelievers' in the Bible

Once again, Jesus took the Twelve aside and began to tell them what was going to happen to him. "Pay attention! We're going up to Jerusalem. The Son of Man will be handed over to the high priests and the scribes, and they'll condemn him to death. Then they'll hand him over to the unbelievers,

Jesus called his disciples and told them, "You know that those who are recognized as rulers among the unbelievers lord it over them, and their superiors act like tyrants over them.