John Trapp on Psalms 68:17

Verſ. 17. The Chariots of God are twenty thouſand] Heb. The Chariot, to note the joynt-ſervice of all the Angels, who are here called, Shinan, of their changeableneſs now taken away by Chriſt, ſay ſome: of their precellency above other Creatures, ſay others, as being ſecond or next unto God, the chief Princes, the Nobles of that Court, as Dan. 10.13. Michael one of the chief Princes. The Seventy render it [non-Latin text not transcribed], The cheerful ones ſuch as are in joy and tranquillity, freely ſerving God in all his Warres, carrying the Elect, and marching about them.

The Lord is among them, as in Sinai] i.e. The Angels make Sion as dreadful to all her enemies, as thoſe Angels made Sinai at the delivery of the Law. See Heb. 12.22.

In the holy place] Holy for the time whilſt God appeared there, ſo 2 Pet. 1.18. Tabor is called the holy Mount.