Exodus 28:30

Expanded Bible

³⁰ And put the Urim and Thummim [^Cdevices, probably lots, that were used to discern God’s will; the name means “light and truth”] inside the ·chest covering [breastpiece] so that they will be on Aaron’s heart when he goes before the Lord. They will help in making decisions for the Israelites. So Aaron will always carry them with him when he is before the Lord.