Exodus 28:30

Urim and Thummim

Urim and Thummim, meaning "lights and perfections." Some make these to be simply a collective name for the stones of the breastplate, so that the total effect of the twelve stones is to manifest the "lights and perfections" of Him who is the antitype of the Aaronic high priest. Per contra, (Leviticus 8:8). This would seem to be conclusive that "the Urim and Thummim" are additional to the stones of the breastplate. In use the Urim and Thummim were connected, in some way not clearly expressed, with the ascertainment of the divine will in particular cases; (Numbers 27:21); (Deuteronomy 33:8); (1 Samuel 28:6); (Ezra 2:63).