1 Samuel 6:19

6:19 He struck of the men of Beth-shemesh, because they had looked into the ark of Yahweh, he struck of the people fifty thousand seventy men; and the people mourned, because Yahweh had struck the people with a great slaughter.
-World English Bible

Other Translation

6:19 And he smote the men of Bethshemesh, because they had looked into the ark of the LORD, 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.
-King James Version