John Gills Exposition of the Bible Commentary - 2 Samuel 6:7
And the anger of the Lord was kindled against Uzzah ,.... And which was manifest by smiting him: and God smote him there for his error ; committed at this time, which was complicated; as that the ark was put upon a cart, to which he might be the chief adviser, as Procopius Gazaeus notes, when it should have been carried on the shoulders of the Levites; and that be touched it with his hand, which none but priests might do, supposing him to be a Levite, which it is not clear he was,... read more
Matthew Henry's Complete Commentary - 2 Samuel 6:6-11
We have here Uzzah struck dead for touching the ark, when it was upon its journey towards the city of David, a sad providence, which damped their mirth, stopped the progress of the ark, and for the present, dispersed this great assembly, which had come together to attend it, and sent them home in a fright. I. Uzzah's offence seems very small. He and his brother Ahio, the sons of Abinadab, in whose house the ark had long been lodged, having been used to attend it, to show their willingness to... read more