O mountain of God, mountain of Bashan; O many-peaked mountain, mountain of Bashan!
David composed this psalm to celebrate victories God granted him over his enemies, most likely after his triumph over the Ammonites and Syrians when the ark returned to Jerusalem. The ark's ascent to the holy mountain prefigures Christ's far more glorious ascension to heaven after He conquered His enemies and ours. Though the psalm rises to great heights of sublimity, its interpretation presents considerable difficulty at many points.
AI summary
Commenting on Psalm 68:1-35
Here the priests on the summit of the chosen hill begin to extol the Lord for his choice of Zion as his dwelling place. The hill of God is as the hill of Bashan, or more accurately, "a hill of God is Bashan, "that is to say, Bashan is an eminent mountain, far exceeding Zion in height. According to the Hebrew custom, every great or remarkable thing is thus designated.
David, having given God praise for what he had done for Israel in general, as the God of Israel (Psa 68:8), here comes to give him praise as Zion's God in a special manner; compare Psa 9:11. Sing praises to the Lord who dwelleth in Zion, for which reason Zion is called the hill of God. I.
Commenting on Psalm 68:15-21