Exodus 28:25-28

25And the other two ends of the two wreathen chains thou shalt put on the two ouches, and put them on the shoulderpieces of the ephod, in the forepart thereof.

26And thou shalt make two rings of gold, and thou shalt put them upon the two ends of the breastplate, upon the edge thereof, which is toward the side of the ephod inward.

27And thou shalt make two rings of gold, and shalt put them on the two shoulderpieces of the ephod underneath, in the forepart thereof, close by the coupling thereof, above the cunningly woven band of the ephod.

28And they shall bind the breastplate by the rings thereof unto the rings of the ephod with a lace of blue, that it may be upon the cunningly woven band of the ephod, and that the breastplate be not loosed from the ephod.