וּלְלֵוִ֣י אָמַ֔ר תֻּמֶּ֥יךָ וְאוּרֶ֖יךָ לְאִ֣ישׁ חֲסִידֶ֑ךָ אֲשֶׁ֤ר נִסִּיתוֹ֙ בְּמַסָּ֔ה תְּרִיבֵ֖הוּ עַל־מֵ֥י מְרִיבָֽה׃
And of Levi he said: Thy Thummim and Thy Urim be with Thy holy one, Whom Thou didst prove at Massah, With whom Thou didst strive at the waters of Meribah;
Read Jewish philosophical commentary on Deuteronomy 33:8: and classical philosophical sources.