While Jesus was praying His face changed in appearance and His clothing became dazzling white. And behold two men were conversing with Him, Moses and Elijah, who appeared in glory and spoke of His exodus that He was going to accomplish in Jerusalem."
The event of the Transfiguration marks a decisive moment in the ministry of Jesus. It is a revelatory event which strengthens the faith in the disciples' hearts, prepares them for the tragedy of the Cross and prefigures the glory of the Resurrection. This mystery is constantly relived by the Church, the people on its way to the eschatological encounter with its Lord. Like the three chosen disciples, the Church contemplates the transfigured face of Christ in order to be confirmed in faith and to avoid being dismayed at his disfigured face on the Cross. In both cases, she is the Bride before her Spouse, sharing in his mystery and surrounded by his light.
This light shines on all the Church's children. All are equally called to follow Christ to discover in him the ultimate meaning of their lives, until they are able to say with the apostle: 'For to me, to live is Christ' (Phil. 1:21). But those who are called to the consecrated life have a special experience of the light which shines forth from the Incarnate Word. For the profession of the evangelical counsels makes them a kind of sign and prophetic statement for the community of the brethren and for the world; consequently they can echo in a particular way the ecstatic words spoken by Peter: "Lord, it is well that we are here" (Mt. 17:4). These words bespeak the Christocentric orientation of the whole Christian life. But they also eloquently express the radical nature of the vocation to the consecrated life: How good it is for us to be with you, to devote ourselves to you, to make you the one focus of our lives! Truly those who have been given the grace of this special communion of love with Christ feel as it were caught up in his splendor: He is "the fairest of the sons of men" (Ps 45:2), the one beyond compare. -- Pope John Paul II - March 1996