1 Samuel 6:2-9

Then the Philistines called in their priests and diviners and asked them, “What should we do about the Ark of the LORD? Tell us how to return it to its own country.” “Send the Ark of the God of Israel back with a gift,” they were told. “Send a guilt offering so the plague will stop. Then, if you are healed, you will know it was his hand that caused the plague.” “What sort of guilt offering should we send?” they asked. And they were told, “Since the plague has struck both you and your five rulers, make five gold tumors and five gold rats, just like those that have ravaged your land. Make these things to show honor to the God of Israel. Perhaps then he will stop afflicting you, your gods, and your land. Don’t be stubborn and rebellious as Pharaoh and the Egyptians were. By the time God was finished with them, they were eager to let Israel go. “Now build a new cart, and find two cows that have just given birth to calves. Make sure the cows have never been yoked to a cart. Hitch the cows to the cart, but shut their calves away from them in a pen. Put the Ark of the LORD on the cart, and beside it place a chest containing the gold rats and gold tumors you are sending as a guilt offering. Then let the cows go wherever they want. If they cross the border of our land and go to Beth-shemesh, we will know it was the LORD who brought this great disaster upon us. If they don’t, we will know it was not his hand that caused the plague. It came simply by chance.”