שִׁמְע֤וּ אֵלַי֙ יֹ֣דְעֵי צֶ֔דֶק עַ֖ם תּוֹרָתִ֣י בְלִבָּ֑ם אַל־תִּֽירְאוּ֙ חֶרְפַּ֣ת אֱנ֔וֹשׁ וּמִגִּדֻּפֹתָ֖ם אַל־תֵּחָֽתּוּ׃
Hearken unto Me, ye that know righteousness, The people in whose heart is My law; Fear ye not the taunt of men, Neither be ye dismayed at their revilings.
Read kabbalistic (mystical) interpretation of Isaiah 51:7: and classical mystical sources.