1 Samuel 6:7-9

7Now therefore make a new cart, and take two milch kine, on which there hath come no yoke, and tie the kine to the cart, and bring their calves home from them:

8And take the ark of Yhwh, and lay it upon the cart; and put the jewels of gold, which ye return him for a trespass offering, in a coffer by the side thereof; and send it away, that it may go.

9And see, if it goeth up by the way of his own coast to Beth–shemesh, then he hath done us this great evil: but if not, then we shall know that it is not his hand that smote us; it was a chance that happened to us.1