The four living creatures, each of them with six wings, were covered with eyes inside and out. Day and night they do not stop exclaiming: “Holy, holy, holy is the Lord God almighty, who was, and who is, and who is to come.” The twenty-four elders throw down their crowns before the throne, exclaiming: “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/112024.cfm
The hymns in the Book of Revelation are an echo of the liturgy celebrated and sung in this early Christian community. Perhaps it is the liturgy that provides the best key to understanding what many see to be a mysterious book.
