Hebrews 1:6
And again, When he bringeth in the first begotten into the world, he saith, And let all the angels of God worship him.
1 Peter 1:12
To whom it was revealed, that not for themselves, but for us they ministered the things which have been now declared to you by them that have preached the gospel to you, with the Holy Ghost sent down from heaven: which things angels desire to look into.
Revelation 5:11-14
And I saw and heard a voice of many angels, round about the throne and the living creatures and the elders; and the number of them was ten thousand times ten thousand, and thousands of thousands,
Revelation 14:8-10
And another angel followed, saying, Babylon the great is fallen, is fallen; she that hath made all nations drink of the wine of her fornication.