This prayer was translated from the Sarum Breviary in Selina F. Fox’s A Chain of Prayer Across the Ages, published in 1913, and adopted as a collect for Saturday in Evening Prayer in the 1979 Prayer Book.
Collect for the Eve of Worship
O God, the source of eternal light: Shed forth your unending day upon us who watch for you, that our lips may praise you, our lives may bless you, and our worship on the morrow give you glory; through Jesus Christ our Lord. Amen.
Like most of the other weekend prayers in the Daily Office, this collect draws upon both night-day imagery and Cross-Eternity theological references. God is the source of eternal light who brings unending day, thus our response of praise is found in our lips and lives, with “our worship on the morrow” as a specific example thereof. Thus, once again, the life of salvation is marked by worship both now and forever.