That therein lies the problem. You don't see the difference between the two kingdoms that Christ came and preached about. Jesus preached about the kingdom of God and the kingdom of Heaven, and while it may seem they are one in the same because sometimes He speaks of them interchangeably, they are two different worlds. The kingdom of God is a spiritual kingdom and the kingdom of Heaven is a worldly physical kingdom.
Luk 1:32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
Did the angel Gabriel lie when he said that Jesus will rule on the throne of David which is on earth in Jerusalem? I mean if the kingdom of God is within us, why would Jesus need to rule on the physical visible throne of David? I mean even Jesus himself said that His kingdom is not of this world, so why is this angel Gabriel going around saying that He is going to inherit David's kingdom on earth?
Here is a website that will show you the difference between the kingdom of Heaven and the kingdom of God.