The Greek word deuro is an adverb used as an imperative: 'Come!' or 'Come here!' It functions as an urgent summons or invitation. In the New Testament it appears in some of the most dramatic summons moments: Jesus calling Lazarus from the tomb (John 11:43), the invitation to the New Jerusalem (Revelation 21:9; 22:17), and the Father's call to the returning son (though using other language). It is the word of invitation, of urgent call, of 'come and see.'
The divine deuro runs throughout Scripture — God always calling, inviting, summoning people to himself. Jesus' ministry is marked by summons: 'Come, follow me' (Matthew 4:19). John 11:43's 'Lazarus, come out!' is the most dramatic deuro in the Gospels — a call that pierces death itself. Revelation 21:9 and 22:17 frame the entire apocalyptic vision as an invitation: 'Come, I will show you... Come!' The deuro of the gospel is God's urgent, gracious, life-giving call to every human soul: Come. Come to me. Come and live.