What does the Bible say about Jesus' kingdom?

In John 18:36, Jesus declares, 'My kingdom is not of this world,' indicating that his reign doesn't conform to worldly authority or power. His kingship is spiritual, not political, and it emphasizes a different kind of authority that operates in grace and truth. This kingdom is characterized by righteousness and peace, contrasting sharply with worldly kingdoms that are often marred by chaos and sin. Jesus acknowledges that his kingdom comes from heaven, where he reigns as King of Kings and Lord of Lords, offering salvation to those who repent and believe in him.