It certainly sounds more realistic for people in darkness to dream of God’s day of vengeance, finding satisfaction in the hope that at the Last Judgement all the godless enemies who oppress us here will be cast into hellfire. But what kind of blessedness is it that luxuriates in revenge and needs the groans of the damned as background to its own joy? For to us a child is born, not an embittered old man. God in a child, not as a hangman.
…
He will establish “peace on earth,” we are told, and he will “uphold peace with justice and with righteousness.” But how can peace go together with justice? What we are familiar with is generally peace base on injustice, and justice based on conflict. The life of justice is struggle. Among us, peace and justice are divided by the struggle for power. The so-called “law of the strongest” destroys justice and right. The weakness of the peacemakers makes peace fragile. It is only in the zeal of love that what power has separated can be put together again: in a just peace and in the right to peace.
This love does not mean accepting breaches of justice “for the sake of peace,” as we say. But it does not mean, either, breaking someone else’s peace for the sake of our own rights. Peace and righteousness will only kiss and be one when the new person is born, and God the Lord, who has created all things, arrives at his just rights in his creation. When God is God in the world, then no one will want to be anyone else’s Lord and God anymore…
But is this really possible here and now, or is it just a dream?
Jürgen Moltmann in The Power of Powerlessness. I read it in “Watch for the Light: Readings for Advent and Christmas”. Emphasis mine.