The thummim, always named with the urim, was one of the two objects of divine inquiry kept in the high priest's breastplate of judgment. Where urim means "lights," thummim means "perfections" — together they may have represented illumination and integrity, or perhaps a binary lot system (light = yes, perfection = no, or vice versa). Scripture never describes their form because their significance was not in the objects themselves but in God's speaking through them. After the exile, the lack of a priest "with urim and thummim" marks a spiritual famine in Israel (Ezra 2:63; Nehemiah 7:65). Christ, our great High Priest, has ended the need for such mediated inquiry — we now come boldly to the throne of grace through Him.