Exodus 39:21-23

New Catholic Bible

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 ²³ with an opening in the middle and a woven border around the opening so that it might not be torn.