7 “Bless the Lord, O my soul.” Say, yea say to your soul, You are still in this life, still bearest about a frail flesh, still “does the corruptible body press down the soul;” still after the entireness of remission have you received the remedy of prayer; for still, while your weaknesses are being healed, do you say, “Forgive us our debts.” Say then to your soul, you lowly valley, not an exalted hill; say to your soul, “Bless the Lord, O my soul, and forget not all His benefits.” What benefits?
Tell them, enumerate them, render thanks. What benefits? “Who forgives all your iniquities.” This took place in baptism. What takes place now? “Who heals all your weaknesses.” This takes place now; I acknowledge. But as long as I am here, “the corruptible body presses down the soul.” Say then also that which comes next, “Who redeems your life from corruption.” After redemption from corruption, what remains? “When this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.
Where, O death, is your contention?” There rightly, “O death, where is your sting?” You seek its place, and findest it not. What is “the sting of death”? What is, “O death, where is your sting?” Where is sin? You seek, and it is nowhere. For “the sting of death is sin.” They are the Apostle's words, not mine. Then shall it be said, “O death, where is your sting?” Sin shall nowhere be, neither to surprise you, nor to assault you, nor to inflame your conscience. Then it shall not be said, “Forgive us our debts.” But what shall be said? “O Lord our God, give us peace: for You have rendered all things unto us.”
Source: Sermons on Selected Lessons of the New Testament (New Advent)