Holy, holy, holy
“In the year King Uzziah died, I saw the Lord seated on a high and lofty throne,a with the train of his garment filling the temple. Seraphim were stationed above; each of them had six wings: with two they covered their faces, with two they covered their feet, and with two they hovered. One cried out to the other: ‘Holy, holy, holy is the LORD of hosts! All the earth is filled with his glory!’ At the sound of that cry, the frame of the door shook and the house was filled with smoke.” Isaiah 6:1-4
“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.’ Whenever the living creatures give glory and honor and thanks to the one who sits on the throne, who lives forever and ever, the twenty-four elders fall down before the one who sits on the throne and worship him, who lives forever and ever.” Rev 4:8-10
It is the continual song in heaven