Revelation 4:8
And the four animals had each of them six wings round about, and within were full of eyes; and they cease not day and night saying, Holy, holy, holy is the Lord God almighty, who was, and who is, and who is to come.
Luke 1:10
and all the people were praying without at the time of offering incense.
Hebrews 1:7
And as to the angels He saith, "Who maketh his angels spirits and his ministers a flame of fire:"
Revelation 7:11
And all the angels stood round the throne, and round the elders, and the four animate beings; and fell on their faces before the throne, and worshipped God, saying, Amen:
Revelation 8:13
And I beheld, and heard an angel flying in the midst of heaven saying with a loud voice, Wo, wo, wo to the inhabitants on the earth from the other voices of the trumpet of the three angels, that are yet to sound.
Revelation 14:6
And I saw another angel flying in the midst of heaven, having the everlasting gospel, to preach to those that dwell upon the earth, to every nation, and tribe, and tongue,