“Holy, holy, holy is the Lord God almighty, who was, and who is, and who is to come . . . Worthy are you, Lord our God, to receive glory and honor and power, for you created all things; because of your will they came to be and were created.” (Rev 4:1-11)
https://bible.usccb.org/bible/readings/111622.cfm
The hymns from the Book of Revelation seem to be taken directly from the liturgy of the community that produced this fascinating book. Hymns are an important part of all liturgy of the church. As Saint Augustine would say, “The one who sings, prays twice!” The young man in today’s video prays thrice!