Psalm 68:17
"The chariots of God are twenty thousand, even thousands of angels: the Lord is among them, as in Sinai, in the holy place."
Cross References (ranked by relevance)
And he said, The LORD came from Sinai, and rose up from Seir unto them; he shined forth from mount Paran, and he came with ten thousands of saints: from his right hand went a fiery law for them.
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.
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;
And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them.
Was the LORD displeased against the rivers? was thine anger against the rivers? was thy wrath against the sea, that thou didst ride upon thine horses and thy chariots of salvation?
Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
And he rode upon a cherub, and did fly: yea, he did fly upon the wings of the wind.
And he said, Draw not nigh hither: put off thy shoes from off thy feet, for the place whereon thou standest is holy ground.
And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a whirlwind into heaven.