Urim is another version for lights, the usual version is Orot אורות fron sing. or אור. There are only two expressions I can think of when urim is used:
Chag Urim חג אורים, and 'urim vetumim אורים ותומים' anybody knows what it means? - check out Vayikra chapter 8 passage 8 .
Happy holidays everybody ! (Except for the muslims
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