Psalm 129, "Out of the depths," which is one of the fifteen Gradual Psalms and the one of the seven Penitential Psalms. It is part of the Divine Office, generally recited or sung at Vespers, and always in the Office of the Dead. In the revised Handbook of Indulgences there is a partial indulgence granted for every recitation of De Profundis. Its theme is a plea for divine mercy and the expression of confident trust in God. In some countries this Psalm is recited to the ringing of the bell about 9 P.M., and in Ireland it was regularly said at Mass after the Last Gospel for the victims of former religious persecutions.