Shook it - The use of the Heb. word here is unusual. Some take the word as in 2 Kings 9:33, and render the passage: “The oxen were throwing, or had thrown it down,” very likely by turning aside to eat what grain there might be on the threshing-floor.
Related Commentaries of 2 Samuel 6:6
2 Samuel 6:6
6 And when they came to Nachon's threshingfloor, Uzzah put forth his hand to the ark of God, and took hold of it; for the oxen shook it.