Luke 2:13
"And suddenly there was with the angel a multitude of the heavenly host praising God, and saying,"
Cross References (ranked by relevance)
And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of them was ten thousand times ten thousand, and thousands of thousands;
Praise ye him, all his angels: praise ye him, all his hosts.
And he said, Hear thou therefore the word of the LORD: I saw the LORD sitting on his throne, and all the host of heaven standing by him on his right hand and on his left.
Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth.
Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?
A fiery stream issued and came forth from before him: thousand thousands ministered unto him, and ten thousand times ten thousand stood before him: the judgment was set, and the books were opened.
When the morning stars sang together, and all the sons of God shouted for joy?
To the intent that now unto the principalities and powers in heavenly places might be known by the church the manifold wisdom of God,
And he dreamed, and behold a ladder set up on the earth, and the top of it reached to heaven: and behold the angels of God ascending and descending on it.
The chariots of God are twenty thousand, even thousands of angels: the Lord is among them, as in Sinai, in the holy place.
Then the spirit took me up, and I heard behind me a voice of a great rushing, saying, Blessed be the glory of the LORD from his place.
Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.