Isaiah 6:3 And one cried unto another, and said, Holy, holy, holy , is the LORD of hosts: the whole earth is full of his glory. (reference to the Triune Godhead)
Ezekiel 21:27 I will overturn, overturn, overturn , it: and it shall be no more, until he come whose right it is; and I will give it him.
Revelation 4:8 And the four beasts had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy , LORD God Almighty, which was, and is, and is to come. (Possible reference to the Triune Godhead?)
Revelation 8:13 And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe , to the inhabiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!