'Ark of the Covenant' in the Bible

So then they went forward, from the mountain of Yahweh, a journey of three days, - and the ark of the covenant of Yahweh, was going before them a journey of three days, to search out for them a resting-place,

But they presumptuously ascended into the top of the mountain, - though, neither, the ark of the covenant of Yahweh nor Mosses moved out of the midst of the camp.