A son of Abinadab, who fell dead while conducting the ark from Kirjath-jearim towards Jerusalem, 2 Samuel 6:1-23; 1 Chronicles 13:1-14. In his person God chastised the prevalent irreverence, which was intimated in the rude jolting along of the ark by oxen, exposed both to sight and to touch, while the law required it to be carefully covered by the priests, and then borne by staves on the shoulders of the Levites, who were not to look upon or touch the ark itself on pain of death, Exodus 25:14; Numbers 4:5,15,19,20. Perhaps Uzzah was not even a Levite. Compare 1 Chronicles 15:2,13.
Source: ATS Bible Dictionary
Uzzah
Strength, a son of Abinadab, in whose house the men of Kirjath-jearim placed the ark when it was brought back from the land of the Philistines (1 Samuel 7:1). He with his brother Ahio drove the cart on which the ark was placed when David sought to bring it up to Jerusalem. When the oxen stumbled, Uzzah, in direct violation of the divine law (Numbers 4:15), put forth his hand to steady the ark, and was immediately smitten unto death. The place where this occurred was henceforth called Perez-uzzah (1 Chronicles 13:11). David on this feared to proceed further, and placed the ark in the house of Obed-edom the Gittite (2 Samuel 6:2-11; 1 Chronicles 13:6-13).