Prayer for the Souls in Purgatory
Praying for the dead is one of the oldest continuous practices in the Church, rooted in the belief that souls being purified before entering heaven can still be helped by the prayers of the living. This is the prayer most commonly said at gravesides and in memory of the deceased.
Eternal rest grant unto them, O Lord, and let perpetual light shine upon them. May the souls of all the faithful departed, through the mercy of God, rest in peace. Amen.