The Kingdom of God arrived with the King...did not Jesus say that it was within you and not observable in it's coming!
The word "midst" is used often, (more than 200 times) in the bible, it doesn't mean inside of a person.
examples: in the midst of the feast________sitting in the midst of the doctors___the ship was in the midst of the sea
A person can live in a country or a kingdom, but a country/kingdom doesn't live inside a person.
Whoever humbles himself will be exalted, and whoever exalts himself will be humbled. While on earth Jesus humbled himself, he was soon exalted as king.