Toll or Tax
Why Jesus Christ mentioned Toll or Tax to peter? Normally government collects toll(duty) to permit the goods into their nation, and collect the tax for the individuals.
Jesus Christ is not of this world, he is the son of our heavenly God, so he ended up paying the Toll to come into this sinful world, and he lived in this sinful world and died for us so he ended up paying the Tax as well - When they came to Capernaum, the collectors of the two-drachma tax went up to Peter and said, Does your teacher not pay the tax? He said, Yes. And when he came into the house, Jesus spoke to him first, saying, What do you think, Simon? From whom do Kings of the earth take toll or tax? From their Sons or from others? And when he said, From others, Jesus said to him, Then the sons are free. However, not to give offense to them, go to the sea and cast a hook and take the first fish that comes up, and when you open its mouth you will find a shekel. Take that and give it to them for me and for yourself - Matthew 17:24-27
Christ lives in us, and the world is a temporary place for us.