This refers to Mount Sinai. The full meaning of this statement can be made explicit. Alternate translation: "Mount Sinai, the mountain of Yahweh" (See: [[rc://en/ta/man/translate/figs-explicit]])
The group of Levites carrying the ark of the covenant went before the people of Israel as the traveled. Alternate translation: "Men carried the ark of the covenant of Yahweh before them as they traveled" (See: [[rc://en/ta/man/translate/figs-personification]])