Isaiah 6:3
And they were calling out to one another: “Holy, holy, holy is the LORD of Hosts; all the earth is full of His glory.”
Berean Standard Bible, public domain. Read all of Isaiah 6
One song meets this passage
“And the angels cry, Holy”
Holy Forever · CeCe Winans
resonates with Isaiah 6:3
Directly draws on the seraphim's unceasing cry of 'holy, holy, holy' before God's throne.