'Submitting' in the Bible

So the king told Ziba, "Pay attention! Everything that belongs to Mephibosheth is now yours!" In response Ziba said, "I'm submitting to you. Let me find favor in your sight, your majesty the king!"

The 70 disciples came back and joyously reported, "Lord, even the demons are submitting to us in your name!"

However, stop rejoicing because the spirits are submitting to you. Instead, rejoice because your names are written in heaven."

If you have died with the Messiah to the basic principles of the world, why are you submitting to its decrees as though you still lived in the world?