'To reign,' as in Revelation 5, signifies being in truths and goods, and so in power, from the Lord, to resist evils and falsities which are from hell. In John 17:20, 24, 'to reign on the earth,' as in Revelation 5:10, signifies being in the Lord's kingdom, and being one with Him there.

(Referencat: Apocalypse Explained 333)