Exodus 28:30

30And in the breastpiece of judgment ayou shall put the Urim and the Thummim, and they shall be on Aaron’s heart, when he goes in before the Lord. Thus Aaron shall bear the judgment of the people of Israel on his heart before the Lord regularly.

Ezra 2:63

63The bgovernor told them that they were not cto partake of the most holy food, until there should be a priest to consult dUrim and Thummim.

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