נְקֹ֗ם נִקְמַת֙ בְּנֵ֣י יִשְׂרָאֵ֔ל מֵאֵ֖ת הַמִּדְיָנִ֑ים אַחַ֖ר תֵּאָסֵ֥ף אֶל־עַמֶּֽיךָ׃
’Avenge the children of Israel of the Midianites; afterward shalt thou be gathered unto thy people.’
Read kabbalistic (mystical) interpretation of Numbers 31:2: and classical mystical sources.