'Kingdom of God' in the Bible

But if I by the Spirit of God cast out demons, then is the kingdom of God come upon you.

And again I say unto you, It is easier for a camel to go through a needle's eye, than for a rich man to enter into the kingdom of God.

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

Therefore say I unto you, The kingdom of God shall be taken away from you, and shall be given to a nation bringing forth the fruits thereof.