Revelation 3:7

And by the messenger of the congregation in Philadelphia, write: These things says the Holy One, the True One; who has the key, the Son of David; he who opens and no man shuts; and shuts, and no man opens:

Revelation 4:8

And the four living creatures had, each of them, six wings round about; and within they were full of eyes: and they rest not, day or night, saying, Holy, holy, holy, Lord God Almighty, who wast, and art, and art to come.

Treasury of Scripture Knowledge

Summary

Exalt the LORD our God, and worship at his holy hill; for the LORD our God is holy.

Bible References

For the

Revelation 3:7
And by the messenger of the congregation in Philadelphia, write: These things says the Holy One, the True One; who has the key, the Son of David; he who opens and no man shuts; and shuts, and no man opens:
Revelation 4:8
And the four living creatures had, each of them, six wings round about; and within they were full of eyes: and they rest not, day or night, saying, Holy, holy, holy, Lord God Almighty, who wast, and art, and art to come.