Entrance Antiphon, Cf. Mt 17:5:In a resplendent cloud the Holy Spirit appeared. The Father’s voice was heard: This is my beloved Son, with whom I am well pleased. Listen to him.Preface: The mystery of the Transfiguration:It is truly right and just, our duty and our salvation, always and everywhere to give you thanks, Lord, holy Father, almighty and eternal God, through Christ our Lord.