How do we know the kingdom of Christ is established?

Isaiah prophesied that in the last days, the kingdom of Christ would be established 'above the hills' and be exalted 'above all mountains' (Isaiah 2:2). This imagery emphasizes Christ's dominion and the certainty of His reign being superior to all earthly powers. Throughout history, every earthly empire has risen and fallen, but Christ’s kingdom is eternal and unshakeable. His presence and rule can be felt in the lives of believers today as they experience the peace and grace of Jesus, while the church continues to grow and spread the gospel to the nations.