IV.
O Lord, almighty Father, unbegotten, have mercy on us.
O Lord, by your own Son you redeemed the work of your hands, have mercy on us.
O Lord, Adonai, blot out our sins, have mercy on us.
O Christ, brightness of the glory of the Father, and the express image of his person, have mercy on us.
O Christ, by command of the Father, you saved the world, have mercy on us.
O Christ, salvation of all and the eternal life of the angels, have mercy on us.
O Lord, the Spirit, the Counselor, bestower of pardon, have mercy on us.
O Lord, fountain of mercy and of sevenfold grace, have mercy on us.
O Lord, most merciful forgiver, proceeding from both the Father, and the Son, have mercy on us.
Most bountiful giver of gifts, teacher, quickener, compassionate, have mercy on us.
Source: The Sarum Missal in English, Part II, Alcuin Club Collections, No. XI
A Collection of Prayers 