'Kingdom of God' in the Bible

But if I cast out the demons through the Spirit of God, then hath the kingdom of God already come to you.

Which of the two did the will of his father? They say, The first. Jesus saith to them, Truly do I say to you, that the publicans and the harlots go into the kingdom of God before you.

Therefore I say to you, that the kingdom of God will be taken away from you, and given to a nation yielding the fruits thereof.