Exodus 28:22-25

22“You are to make for the breastpiece braided chains like cords of pure gold,

23and you are to make for the breastpiece two gold rings and attach the two rings to the upper two ends of the breastpiece.

24You are to attach the two gold chains to the two rings at the ends of the breastpiece;

25the other two ends of the two chains you will attach to the two settings and then attach them to the shoulder pieces of the ephod at the front of it.