The Kingdom of God is wherever He wants it to be. He's the Creator God, YHVH, and He created "all this" just for us.
But all this, is just temporary.
1st Corinthians chapter 15:
Verse 42 - "So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption:"
This body, this "tent", is a temporary dwelling. God dwelling at the Mercy Seat of the Ark of the Covenant, was housed in a "tent" at the center of the camp of Israel. This prophecy of Sukkot fulfilled, was when Jesus Christ was born, and God dwelled among humankind.
Verse 43 - "It is sown in dishonour; it is raised in glory: it is sown in weakness; it is raised in power:"
The body will die, according to The Law, because by The Law all die. Except for one person in all of history, only one died a sinless death. In the redeeming power of Jesus' sinless blood, as the lamb of God, we are resurrected into spiritual bodies. They are not bound by the sinful nature of these flesh bodies.
Verse 43 - "It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body."
That should clear it up, if it wasn't clear the first time.
Praise to God that His Kingdom is "not of this world" (John 18:36). Can you imagine trying to serve a sinless God, while in a sinful form? We just can't do it. Which is why He provided us a "way out", Just like He did for Abraham all those years ago, when God provided a ram in Isaac's place.
God's official "way out", is our guaranteed path to victory over death itself, is very simple: Jesus Christ. That's all! If you believe, then you don't even have to worry about death. It's a peaceful feeling, but one that we should not be complacent in.
"Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law." - 1st John chapter 3, verse 4.
The Law did not die with Jesus, it was resurrected, and made into something perfect. A transgression of The Law, is still a sin. But He forgives us, and so the sin is made void, not the Law. The Law you broke is still there, and it will still be a sin to do that after you've been forgiven.
"She said, No man, Lord. And Jesus said unto her, Neither do I condemn thee: go, and sin no more." - John chapter 8, verse 11.
If Jesus died to abolish The Law, then we have a hard time telling people how their sins are keeping them from entering the Kingdom of God, because if there is no Law then there is no sin.