On which, &c. — That is, by, or before which, they were to present their prayers to God for counsel and succour upon all occasions. And this is mentioned here as the reason why David put himself and his people to so great trouble and charge, because it was to fetch up the choicest treasure which they had.
Related Commentaries of 2 Samuel 6:2
2 Samuel 6:2
2 And David arose, and went with all the people that were with him from Baale of Judah, to bring up from thence the ark of God, whose name is called by the name of the LORD of hosts that dwelleth between the cherubims.