WEB
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.
YLT
And He smiteth among the men of Beth-Shemesh, for they looked into the ark of Jehovah, yea, He smiteth among the people seventy men—fifty chief men; and the people mourn, because Jehovah smote among the people—a great smiting.