Luke 2:13-14
And immediately there was with the angel a multitude of the army of Heaven praising God and saying,
Ephesians 3:10
concealed in order that the Church might now be used to display to the powers and authorities in the heavenly realms the innumerable aspects of God's wisdom.
Revelation 5:11-14
And I looked, and heard what seemed to be the voices of countless angels on every side of the throne, and of the living creatures and the Elders. Their number was myriads of myriads and thousands of thousands,
Revelation 7:9
After this I looked, and a vast host appeared which it was impossible for anyone to count, gathered out of every nation and from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in long white robes, and carrying palm-branches in their hands.