Five-minute study · Day 141 · Exodus 28
Exodus 28:30
A word worth stopping on: Urim אוּרִים urim
'And thou shalt put in the breastplate of judgment the Urim and the Thummim; and they shall be upon Aaron's heart, when he goeth in before the LORD.' Nobody alive knows what these objects looked like. The text never describes them. It says where they go (in the breastplate, against the high priest's chest) and what they do (render divine verdicts). Everything else is inference. The names mean 'lights' and 'perfections,' or possibly 'curses' and 'acquittals.' Two objects, placed over the heart of the high priest, used to obtain a yes or a no from God when the nation faced a decision too large for human wisdom.
Word study: Urim
- Hebrew
- אוּרִים
- Pronounced
- urim
- Strong's
- H8550
- Definition
- A priestly device for obtaining divine decisions. Always paired with Thummim. The etymology points to 'lights' (from or, light) or possibly 'curses' (from arar, to curse), though certainty is impossible.
The Urim and Thummim are among the most mysterious objects in the Hebrew Bible. They appear in Exodus 28:30, Leviticus 8:8, Numbers 27:21, Deuteronomy 33:8, 1 Samuel 28:6, and Ezra 2:63, and in every case the text assumes the reader already knows what they are. No passage describes their shape, size, material, or method of use.
Cornelius van Dam's exhaustive study traces the possible etymologies. If Urim derives from or (light), the objects may symbolize divine illumination. If it derives from arar (to curse), and Thummim from tamam (to be complete, innocent), the pair may represent 'guilty' and 'innocent,' a binary verdict system. BDB lists the meaning as uncertain but favors the 'lights and perfections' reading, which the Septuagint follows, translating as delosis kai aletheia (manifestation and truth).
The operational evidence suggests a binary lot-casting system. In 1 Samuel 14:41-42, Saul asks God to divide between himself and Jonathan on one side and the people on the other. The Septuagint preserves a longer text that explicitly names the Urim and Thummim in this passage, though the Masoretic text is shorter. The answer comes in two stages: first the lot falls on Saul and Jonathan, then on Jonathan alone. The decision tree is binary at each step.
Mesopotamian parallels illuminate the practice. The tamitu oracle system in Babylonia involved presenting binary questions to the gods through divination priests. A question would be framed so the answer was yes or no, and the priest would perform the ritual to obtain the divine response. The structural parallel is close: a priestly mediator, a sacred mechanism, a binary answer to a specific question. The difference is theological. In Israel, the mechanism belongs exclusively to the high priest, functions only in the LORD's presence, and is never described as manipulating divine will. It is a listening device, an instrument for receiving what God has already decided.
By the post-exilic period, the Urim and Thummim had disappeared. Ezra 2:63 records that certain priests were excluded from service 'till there stood up a priest with Urim and with Thummim,' a statement that acknowledges both the authority of the device and its absence. The Talmud (Sotah 48b) lists the Urim and Thummim among things present in the First Temple that were missing from the Second.
Historical context · Second millennium BC through the post-exilic period
Sacred Lots and the Priestly Breastplate
The high priest's breastplate (choshen) was a square pouch made of gold, blue, purple, and scarlet thread, set with twelve precious stones representing the twelve tribes of Israel. Exodus 28:15-30 describes its construction in detail. The Urim and Thummim were placed inside this pouch, against the priest's chest, when he entered the LORD's presence. The breastplate was called the choshen mishpat, the breastplate of judgment, and the Urim and Thummim were the instruments through which that judgment was rendered.
Lot-casting for divine guidance was widespread in the ancient Near East. The Mesopotamian baru priest used extispicy (reading animal entrails) and other methods to determine divine will. The tamitu texts from Nineveh and Babylon preserve hundreds of yes/no questions presented to the gods Shamash and Adad. A typical question would be framed: 'From this day, the third day of this month, to the third day of the next month, will the enemy attack this city?' The priest would then perform the divination ritual and interpret the result.
Israel's system differed in critical ways. The Urim and Thummim were restricted to the high priest. There was no class of professional diviners. The objects could only be used before the LORD, in a sacred context. And the broader divinatory arts practiced by Israel's neighbors, including astrology, necromancy, and hepatoscopy, were explicitly forbidden in Deuteronomy 18:10-12. The Urim and Thummim were the single authorized channel for this kind of direct inquiry.
Archaeological evidence for lot-casting devices in the region includes marked stones found at various Bronze Age sites. At Hazor, excavators found marked objects in temple contexts that may have functioned as lots. In Transjordan, clay liver models used for teaching divination have been discovered, confirming that the technology of sacred decision-making was widespread. Israel participated in the broader cultural practice of seeking divine guidance through physical media while limiting and sanctifying the practice in ways unique to its covenant theology.
For reflection
The Urim and Thummim were a channel for hearing God's yes or no on questions that exceeded human wisdom. The priest could not use them to get what he wanted. He could only receive what God had decided. Think about the decisions sitting in front of you this week. Are you asking God for direction, or asking him to approve the direction you have already chosen? There is a difference between inquiry and confirmation bias dressed up as prayer.
Ezra's community had no Urim and Thummim. They waited. Sometimes the holiest posture before a closed door is stillness.
Sources: BDB Lexicon; van Dam, 'The Urim and Thummim: A Means of Revelation in Ancient Israel'; Milgrom, 'Leviticus 1-16' (AB)