Hebrews 1:6
and when He again introduceth the First-born into the world, he saith, "And let all the angels of God worship Him."
1 Peter 1:12
to whom it was revealed, that it was not to themselves, but to us they ministered these things, which are now declared unto you by them that have preached the gospel unto you, through the holy Spirit sent down from heaven; which things the angels desire to look into.
Revelation 5:11-14
And I beheld, and I heard the voice of many angels round the throne and the animals and the elders: and the number of them was myriads of myriads, and thousands of thousands;
Revelation 14:8-10
And another angel followed, saying, Babylon the great city is fallen, is fallen; because she made all nations drink of the wine of her furious fornication.