Good Friday, evening (Prayer Book)
A Psalm of Christ's desolation, the darkness on the Cross, His death and burial and descent into hell.
PSALM lxxxix. Misericordias Domini
Christmas Day, evening (Prayer Book)
The Church's praise for the promises of the Incarnation, and their fulfilment in the line of David. The certainty of the eternal reign of Christ and the preservation of His Church. At ver. 37 the tone changes to prayer respecting the present eclipse of Christ's glory, and the failures of His Church. The Psalm ends, as it were, with the appeal of Christ Himself to the Father (49-50) for His suffering Church.
PSALM xc. Domine, refugium
Burial of the Dead (Prayer Book)
The Psalm of the Church's hope in the eternity of God, and the unfailing nature of His purpose to restore man in Christ, in contrast with man's mortality, his short life and earthly failure.
PSALM xci. Qui habitat