Exodus 39:20-22

New Catholic Bible

²⁰ They made two other golden rings and placed them on the two shoulder pieces of the ephod, at their bottom on the front side, next to the place where it is attached to the skillfully woven band of the ephod.

²¹ Other Priestly Vestments. They then tied the breastplate with its rings to the rings of the ephod with a cord of blue material so that it might lie upon the skillfully woven band of the ephod and that the breastplate might not pull away from the ephod, as the Lord had commanded Moses.

²² The Robe. He made a robe of the ephod all in blue