O God, who on the holy mount revealed to chosen witnesses your well-beloved Son, wonderfully transfigured, in raiment white and glistening: Mercifully grant that we, being delivered from the disquietude of this world, may by faith behold the King in his beauty; who with you and the Holy Spirit lives and reigns, one God, for ever and ever. Amen.
Preface of the Transfiguration
Because in the mystery of the Word made flesh, you have caused a new light to shine in our hearts, to give the knowledge of your glory in the face of your Son Jesus Christ our Lord.