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If Jesus is king in heaven then the Kingdom of God is in heaven. If Jesus is king, reign on earth then the Kingdom of Heaven is on earth. If Jesus is king in my heart, then the Kingdom of God is in me.

"Rick Warren Clarifies Doctrine, Purpose Driven Life with John Piper". Interview with John Piper, www.christianpost.com. May 28, 2011.
If Jesus is king in heaven then the Kingdom of God is in heaven. If Jesus is king, reign on earth then the Kingdom of Heaven is on earth. If Jesus is king in my heart, then the Kingdom of God is in me.