Nathan of Breslov,
Translation:Likutei Halakhot/Orach Chayim…
“ And therefore Qorach disputed the priesthood, for the Kohen is the aforementioned aspect of the true Rav, the aspect of “The Kohen's lips will guard knowledge, and Torah” etc.; “If the Rav is like the Messenger of H' Tzeva'oth” etc. as mentioned. For Kohen is the aspect of Chesed/Kindness, the aspect of Avraham, that is, the aspect of holy love, yearning and aspirations which one attains through this Rav who resembles the Messenger of H' Tzeva'oth, and as mentioned. ”
