From the Apocalypse
The Revelation of John likewise tells us that in a new song these praises are offered to Christ: “You are worthy to take the book, and to open the seals thereof: for You were slain, and hast redeemed us to God by Your blood out of every kindred, and tongue, and people, and nation.”
Source: Merits and Remission of Sin, and Infant Baptism (New Advent)