Many of these posts have celebrated Psalm 51 as the Psalm of Psalms in the medieval period. Even as late as the Victorian period there were some commentators who weren’t shy of throwing a few superlatives at this psalm and its six companion penitential psalms. Here is Neale and Littledale’s take on the seven psalms:
the seven weapons wherewith to oppose the seven deadly sins: the seven prayers inspired by the sevenfold Spirit to the repenting sinner: the seven guardians for the seven days of the week: the seven companions for the seven Canonical Hours of the day. [Neale and Littledale, p.124]
The reference here to the seven deadly sins is another reason for the popularity of the penitential psalms and their chief, Psalm 51. In the Middle Ages the notion that there were seven serious—i.e. deadly—sins was a popular one. I am unsure when the association was first established but here’s the list of which psalms which can be said, according to Catholic tradition, to counter a specific sin:
• Psalm 6: Pride
• Psalm 32 : Avarice
• Psalm 38 : Anger
• Psalm 51 : Lust
• Psalm 102 : Gluttony
• Psalm 130 : Envy
• Psalm 143 : Sloth
I have included the Latin psalm numbers in parentheses as the seven deadly sins are most readily connected with the Roman tradition and psalm numbering. A comparison of the seven sins and the seven prayers reveals a less than convincing match. The exception being Psalm 51 and the sin of lust. In this case, in accordance with the heading, the context is very much a story of sin that began with David’s lust for the bathing Bathsheba.
Despite the lack of one-to-one correspondence between the seven psalms and the seven deadly sins, I suggest we would do well to have Psalm 51 to hand daily. This is a psalm that can help us avoid sin and the Psalm of Psalms for asking for God to forgive us in his bountiful mercy.
John Mason Neale and Richard Frederick Littledale, A Commentary on the Psalms: From Primitive and Mediaeval Writers, second edition, volume 1, London: Joseph Masters, 1869.