Oecumenius

And they sang a new song. For the song sung to God incarnate is new, having never before been brought forth prior to the incarnation. What was the song? Worthy are You, it says, "to bring this salvation to mankind, you who were slain for us and by your blood have redeemed many from under the heavens." And he certainly spoke very securely from every tribe and language and people and nation. For he did not acquire all, for many died in unbelief, but from all those worthy of salvation. …

Commentary on Revelation ↗

Bede

And you have redeemed us to God by your blood, etc. Here it is further declared that the creatures and elders are the Church, which has been redeemed by the blood of Christ and gathered from the nations. It also shows in which heaven they are, by saying: And they will reign on the earth. And I saw and heard the voice of many angels around the throne, and the creatures, and the elders.

Commentary on Revelation ↗

Alcuin of York

And they sung a new canticle, saying: Thou art worthy, O Lord our God, to take the book, etc. Christ sang a new canticle by preaching it in words and following it in acts. Now what does it mean to say, Thou art worthy, O Lord our God, to take the book, and to open the seals thereof; because thou wast slain, and hast redeemed us to God, in thy blood, out of every tribe, and tongue, and people, and nation, if not "Compared to our victories, thy victory alone is considered one, by which we were redeemed from the prince of death and the …

Commentary On Revelation ↗