Feast of All Souls

The Day of the Dead (1859) by William Bougereau

Out of the depths I have cried to thee, O Lord: Lord, hear my voice. Let thy ears be attentive to the voice of my supplication. If thou, O Lord, wilt mark iniquities: Lord, who shall stand it. For with thee there is merciful forgiveness: and by reason of thy law, I have waited for thee, O Lord. My soul hath relied on his word: My soul hath hoped in the Lord.

From the morning watch even until night, let Israel hope in the Lord. Because with the Lord there is mercy: and with him plentiful redemption. And he shall redeem Israel from all his iniquities (Psalm 129, Douay-Rheims Version)

Here is a prayer of St. Gertrude the Great for the souls in Purgatory:

Eternal Father, I offer Thee the Most Precious Blood of Thy Divine Son, Jesus, in union with the Masses said throughout the world today, for all the Holy Souls in Purgatory, for sinners everywhere, for sinners in the universal Church, those in my own home and within my family.