Psalms 99:3

99:3 Let them praise your great and awesome name!

He is holy!

Isaiah 6:3

6:3 They called out to one another, “Holy, holy, holy is the Lord who commands armies! His majestic splendor fills the entire earth!”

Revelation 4:8

4:8 Each one of the four living creatures had six wings and was full of eyes all around and inside. They never rest day or night, saying:

“Holy Holy Holy is the Lord God, the All-Powerful,

Who was and who is, and who is still to come!”