Two objects placed inside the high priest's breastplate (28:30) and never once described — no shape, no material, no instructions for use, in a chapter otherwise obsessed with exact specification. The names likely mean something like 'lights' and 'perfections' or 'truth,' though even that etymology is genuinely uncertain; how the objects actually functioned — cast like lots, or read by some other sign — is a question ancient rabbinic sources already confessed they could not answer with confidence. Every major English version transliterates rather than translates both words — the rare point where the whole shelf agrees, by declining to guess. → first discussed at Exod 28:30