Mattityahu 23:8-10

Orthodox Jewish Bible

⁸ But you are not to have pretentious titles like Rebbe, for One is your Rebbe [Rebbe Melech HaMoshiach], and all of you are Achim b’Moshiach.

⁹ And do not refer to anyone in the Olam Hazeh as your Abba, for One is your Av shbaShomayim.

¹⁰ Neither be called Moreinu, for One is your Moreh (teacher) the Rebbe, Melech HaMoshiach [Moreinu].