'Kingdom' in the Bible

Jesus replied, “I assure you: Unless someone is born again, he cannot see the kingdom of God.”

Jesus answered, “I assure you: Unless someone is born of water and the Spirit, he cannot enter the kingdom of God.

“My kingdom is not of this world,” said Jesus. “If My kingdom were of this world, My servants would fight, so that I wouldn’t be handed over to the Jews. As it is, My kingdom does not have its origin here.”