Exodus 28:22-25

22“You shall make chains for the breastplate at the end, like braided cords of pure gold.

23And you shall make two rings of gold for the breastplate, and put the two rings on the two ends of the breastplate.

24Then you shall put the two braided chains of gold in the two rings which are on the ends of the breastplate;

25and the other two ends of the two braided chains you shall fasten to the two settings, and put them on the shoulder straps of the ephod in the front.