“Let us go forth in peace” is the last commandment of the Liturgy. What does it mean? It means, surely, that the conclusion of the Divine Liturgy is not an end but a beginning. Those words, “Let us go forth in peace,” are not merely a comforting epilogue. They are a call to serve and bear witness. In effect, those words, “Let us go forth in peace,” mean the Liturgy is over, the liturgy after the Liturgy is about to begin.
This, then, is the aim of the Liturgy: that we should return to the world with the doors of our perceptions cleansed. We should return to the world after the Liturgy, seeing Christ in every human person, especially in those who suffer. In the words of Father Alexander Schmemann, the Christian is the one who wherever he or she looks, everywhere sees Christ and rejoices in him. We are to go out, then, from the Liturgy and see Christ everywhere.”
– Metropolitan Kallistos (Ware)