1 Samuel 6:19

And he, God, smote the men of Beth-shemesh, because they, overcome by a blasphemous curiosity, had looked into the ark of the Lord, in a manner which did not agree with the holiness of Jehovah, to whom the ark was dedicated, even He smote of the people fifty thousand and threescore and ten men. And the people lamented because the Lord had smitten many of the people with a great slaughter Apparently the presence of the ark attracted a great many sightseers from the entire surrounding country, who came with anything but a reverent mind and were therefore punished by Jehovah.