'Kingdom of God' in the Bible

"For there are eunuchs who have been such from birth; others who have been made such by men; and others who have made themselves eunuchs for the sake of the kingdom of God. He who is able to receive this, let him receive it."

"I tell you that for this reason the kingdom of God will be taken away from you, and will be given to a nation that does produce the fruit of it.