וְאַתֶּ֗ם כֹּהֲנֵ֤י יְהוָה֙ תִּקָּרֵ֔אוּ מְשָׁרְתֵ֣י אֱלֹהֵ֔ינוּ יֵאָמֵ֖ר לָכֶ֑ם חֵ֤יל גּוֹיִם֙ תֹּאכֵ֔לוּ וּבִכְבוֹדָ֖ם תִּתְיַמָּֽרוּ׃
But ye shall be named the priests of the LORD, Men shall call you the ministers of our God; Ye shall eat the wealth of the nations, And in their splendour shall ye revel.
Read kabbalistic (mystical) interpretation of Isaiah 61:6: and classical mystical sources.