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.
Before leaving this episode, the miraculous nature of what is revealed here should be stressed.  Only the direct intervention of God could possibly account for the behavior of those cows leaving their calves behind and taking that cart directly to Israel.