How do we know God's kingdom is not of this world?

In John 18:36, Jesus asserts, 'My kingdom is not of this world,' which underscores the profound truth of the Christian faith that believers belong to a spiritual realm that transcends earthly politics. This delineation is crucial because it affects how Christians engage with the world around them. Understanding that our primary allegiance lies with the kingdom of God encourages believers to prioritize spiritual growth and evangelism over political debates. This view encourages Christians to live out their faith in ways that reflect their ultimate citizenship, which lies in heaven.