28:30 “You are to put the Urim and the Thummim 1 into the breastpiece of decision; and they are to be over Aaron’s heart when he goes in before the Lord. Aaron is to bear the decisions 2 of the Israelites over his heart before the Lord continually.
1 sn The Urim and the Thummim were two objects intended for determining the divine will. There is no clear evidence of their size or shape or the material of which they were made, but they seem to have been familiar items to Moses and the people. The best example of their use comes from 1 Sam 14:36-42. Some have suggested from the etymologies that they were light and dark objects respectively, perhaps stones or sticks or some other object. They seem to have fallen out of use after the Davidic period when the prophetic oracles became popular. It may be that the title “breastpiece of judgment” indicates that these objects were used for making “decisions” (J. P. Hyatt, Exodus [NCBC], 283-84). U. Cassuto has the most thorough treatment of the subject (Exodus, 378-82); he lists several very clear rules for their uses gathered from their instances in the Bible, including that they were a form of sacred lot, that priests or leaders of the people only could use them, and that they were used for discovering the divine will in areas that were beyond human knowledge.
2 tn Or “judgment” (KJV, ASV, NASB, NRSV). The term is מִשְׁפָּט (mishpat), the same word that describes the breastpiece that held the two objects. Here it is translated “decisions” since the Urim and Thummim contained in the breastpiece represented the means by which the
3 tn The verse simply begins “And Yahweh said.” But it is clearly meant to be explanatory for the preceding action of the people.
4 tn The construction is formed with a simple imperfect in the first half and a perfect tense with vav (ו) in the second half. Heb “[in] one moment I will go up in your midst and I will destroy you.” The verse is certainly not intended to say that God was about to destroy them. That, plus the fact that he has announced he will not go in their midst, leads most commentators to take this as a conditional clause: “If I were to do such and such, then….”
5 tn The Hebrew text also has “from on you.”
6 tn The form is the cohortative with a vav (ו) following the imperative; it therefore expresses the purpose or result: “strip off…that I may know.” The call to remove the ornaments must have been perceived as a call to show true repentance for what had happened. If they repented, then God would know how to deal with them.
7 tn This last clause begins with the interrogative “what,” but it is used here as an indirect interrogative. It introduces a noun clause, the object of the verb “know.”