Revelation 4:8

And each of the four living beings had six wings [and] were covered with eyes all around them and [even] within them. And day and night they never stop saying, [Note: Some translations have "singing" here and at other places below], "Holy, holy, holy [is] the Lord God Almighty, who was [in the past] and who is [in the present] and who will come [in the future]."

Revelation 19:5-6

Then a voice came from the throne, saying, "Give praise to our God, all of you [who are] His servants, you who are the least significant and [also] the most important ones, who revere Him."

Treasury of Scripture Knowledge

Summary

Sing unto the LORD, O ye saints of his, and give thanks at the remembrance of his holiness.

Holiness

Bible References

Holiness

Revelation 4:8
And each of the four living beings had six wings [and] were covered with eyes all around them and [even] within them. And day and night they never stop saying, [Note: Some translations have "singing" here and at other places below], "Holy, holy, holy [is] the Lord God Almighty, who was [in the past] and who is [in the present] and who will come [in the future]."