DeProfundis

De Profundis means literally 'Out of the Depths' in Latin and is taken from the first line of Psalm 130.

In Rome, the "De Profundis" is rung every evening by the parish churches one hour after the Ave Maria. Clement XII in 1736 granted an indulgence for this practice and endeavored to extend it. This custom is observed in many other places, particularly in North America.

At 9 o'clock every evening, a nine-count slow toll is rung, one toll for each line of the prayer.

[Canticum graduum]
De profundis clamavi ad te, Domine;
Domine, exaudi vocem meam. Fiant aures tuæ intendentes
in vocem deprecationis meæ.
Si iniquitates observaveris, Domine, Domine, quis sustinebit?
Quia apud te propitiatio est; et propter legem tuam sustinui te, Domine.
Sustinuit anima mea in verbo ejus:
Speravit anima mea in Domino.
A custodia matutina usque ad noctem, speret Israël in Domino.
Quia apud Dominum misericordia, et copiosa apud eum redemptio.
Et ipse redimet Israël ex omnibus iniquitatibus ejus.