After the preface prayer, the "Holy" (Sanctus) is recited, either recited or sung. It is a hymn of praise and exaltation of the greatness of God's holiness. This hymn remains unchanged: "Holy, Holy, Holy, Lord God Almighty. Heaven and earth are full of your glory. Praise in the highest... Catechism on the Liturgy (The Holy), with P. Justolat Rafaralahimboa.