חָדְשֵׁיכֶ֤ם וּמוֹעֲדֵיכֶם֙ שָׂנְאָ֣ה נַפְשִׁ֔י הָי֥וּ עָלַ֖י לָטֹ֑רַח נִלְאֵ֖יתִי נְשֹֽׂא׃
Your new moons and your appointed seasons My soul hateth; They are a burden unto Me; I am weary to bear them.
Read kabbalistic (mystical) interpretation of Isaiah 1:14: and classical mystical sources.