בְּסֹדָם֙ אַל־תָּבֹ֣א נַפְשִׁ֔י בִּקְהָלָ֖ם אַל־תֵּחַ֣ד כְּבֹדִ֑י כִּ֤י בְאַפָּם֙ הָ֣רְגוּ אִ֔ישׁ וּבִרְצֹנָ֖ם עִקְּרוּ־שֽׁוֹר׃
Let my soul not come into their council; Unto their assembly let my glory not be not united; For in their anger they slew men, And in their self-will they houghed oxen.
Read kabbalistic (mystical) interpretation of Genesis 49:6: and classical mystical sources.