Hebrews 1:6
And again, when God sent the Firstborn One [i.e., Jesus. See Rom. 8:29; Col. 1:15, 18; Rev. 1:5] into the world, He said [Deut. 32:43 LXX], "And all of God's angels should worship Him."
1 Peter 1:12
It was revealed to these prophets that you people, not they, were the ones being ministered to in the matters now being announced to you by those who preached the Gospel to you by the Holy Spirit, who was sent from heaven. [This message contained] things which angels would like to look into.
Revelation 5:11-14
Then I looked, and heard the voice of many angels surrounding the throne and the living beings and elders. They numbered in the tens of thousands, and thousands and thousands [more]. [Note: The Greek says "myriads of myriads"].
Revelation 14:8-10
Then [I saw] a second angel following [him]. He said, "Fallen! Great Babylon has fallen. She has forced all the nations to drink the wine of her passionate sexual immorality [Note: The word "passionate" here could also mean "angry"]."