How do we know our citizenship is in heaven?

Philippians 3:20 emphasizes that our citizenship is not rooted in this world but in heaven. This verse reassures believers that while we dwell on earth, our true home lies with Christ, giving us hope as we eagerly await His return. Similarly, Revelation 21 depicts the new Jerusalem, where believers will dwell with God forever. The security of our heavenly citizenship is reinforced by our identity in Christ, who has reserved a place for us, as indicated in 1 Peter 1:3-4. Thus, our anticipation of eternal glory strengthens our assurance of being fellow citizens with the saints in the heavenly kingdom.