A new cart ... kine on which there hath come no yoke - This was so ordered in reverence to the ark, and was a right and true feeling. See Mark 11:2; Matthew 27:60. For the supposed special virtue of new things, see Judges 16:7, Judges 16:11.
Related Commentaries of 1 Samuel 6:7
1 Samuel 6:7
7 Now 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: