The chariots of God are twenty thousand, Even thousands of thousands; The Lord is among them as in Sinai, in the Holy Place.
Psalms 68:17
Surrounding context
68:16 Why do you fume with envy, you mountains of many peaks? This is the mountain which God desires to dwell in; Yes, the LORD will dwell in it forever.
68:17 The chariots of God are twenty thousand, Even thousands of thousands; The Lord is among them as in Sinai, in the Holy Place.
68:18 You have ascended on high, You have led captivity captive; You have received gifts among men, Even from the rebellious, That the LORD God might dwell there.