This tract is often on the Church's lips during Lent. As the music to which it is sung shows, it is a suppliant appeal of man in his distress addressed to almighty God. It is said or sung before the Gospel at Mass, from this day on the Monday, Wednesday and Friday of each week till the Monday in Holy Week, with the exception of the Wednesday in Ember Week.
Domine, non secundum peccata nostra, quae fecimus nos: neque secundum iniquitates nostras retribuas nobis, V. Domine, ne memineris iniquitatum nostrarum antiquarum, cito anticipent nos misericordiae tuae: quia pauperes facti sumus nimis. (Here kneel.) V. Adjuva nos, Deus salutaris noster: et propter gloriam nominis tui, Domine, libera nos: et propitius esto peccatis nostris, propter nomen tuum.
O Lord, repay us not according to the sins we have committed, nor according to our iniquities. V. O Lord, remember not our former iniquities, let Thy mercies speedily prevent us: for we are become exceeding poor. (Here kneel.) V. Help us, O God, our Saviour: and for the glory of Thy name, O Lord, deliver us: and forgive us our sins for Thy name's sake.
(Psalm 102:10 and Psalm 78:8-9.)