Exodus 28:30 And thou shalt put in the breastplate of judgment the Urim and the Thummim; and they shall be upon Aaron’s heart, when he goeth in before the Lord: and Aaron shall bear the judgment of the children of Israel upon his heart before the Lord continually. 10 I MC VC

Leviticus 8:8 And he put the breastplate upon him: also he put in the breastplate the Urim and the Thummim. 10 I MC VC