Hebrews 1:6
But, when again He introduces the First-born into the inhabited earth, He saith, "And let all the angels of God worship Him."
1 Peter 1:12
to whom it was revealed that, not to themselves, but to you they were ministering them; which things now were reported to you through those who proclaimed the Gospel to you by the Holy Spirit sent forth from Heaven; into which things angels desire to look carefully.
Revelation 5:11-14
And I saw, and heard the voice of many angels round about the throne, and of the living creatures, and of the elders, (and the number of them was ten thousand times ten thousand, and thousands of thousands);
Revelation 14:8-10
And another, a second angel, followed, saying, "It fell, it fell, Babylon the Great, that has made all the nations drink of the wine of the wrath of her fornication!"