Exodus 28:28-30

Darby Translation

²⁸ And they shall bind the breastplate with its rings to the rings of the ephod with a lace of blue, that it may be above the girdle of the ephod, and that the breastplate be not loosed from the ephod.

²⁹ And Aaron shall bear the names of the children of Israel in the breastplate of judgment on his heart, when he goes in to the sanctuary, for a memorial before Jehovah continually.

³⁰ And thou shalt put into the breastplate of judgment the Urim and the Thummim, that they may be upon Aaron's heart when he goeth in before Jehovah; and Aaron shall bear the judgment of the children of Israel upon his heart before Jehovah continually.