The psalms are not merely ancient poems which the Church fancifully adapts to her own liturgical uses. Everything in them is charged with vital urgency by virtue of the fact that they are full of Christ. Either they speak to us directly of the Redeemer Himself in His sufferings, His kingship, His priesthood: or else they narrate the trials and progress of the Mystical Christ, the Church, His people. When Israel went out of Egypt and wandered in the desert, God became a pilgrim with them in the dark years of their tribulation. He came down to them on the mountain in cloud and fire, speaking to them through Moses who was a type of Christ. He fed them in the desert with manna, foreshadowing the Holy Eucharist. Water sprang from a rock in the desert at the command of Moses, and never ceased to supply them until they settled in the Land of Promises. ‘The Rock,’ says St. Paul, ‘was Christ’ . . . .It is in chanting the Psalms that we too are leaving Egypt. The Liturgy is the Church’s greatest weapon against her enemies because it is filled with the might of the Mystery which is its center. The Mystery of Christ is the heart of all history and extends backwards and forwards and embraces all time. It was in Christ that Israel crossed the desert and it is in Christ that we, the tribes of Israel, are going up to Jerusalem. The Mystery of Christ is timeless. . .