1 Samuel 6:9-11

Living Bible

⁹ If they cross the border of our land and go into Beth-shemesh, then you will know that it was God who brought this great evil upon us; if they don’t but return to their calves,^[a] then we will know that the plague was simply a coincidence and was not sent by God at all.”

¹⁰ So these instructions were carried out. Two cows with newborn calves were hitched to the cart and their calves were shut up in the barn. ¹¹ Then the Ark of the Lord and the chest containing the gold rats and tumors were placed upon the cart.