Matthew 23:8

8Youὑμεῖςhoweverδὲnotμὴshall be calledκληθῆτε·RabbiῬαββί,Oneεἷςforγάρisἐστινof youὑμῶνtheὁTeacherδιδάσκαλος,allπάντεςnowδὲyouὑμεῖςbrothersἀδελφοίareἐστε·

But you⁺ shall not be called ‘Rabbi,’ for your⁺ Teacher is One, and you⁺ are all brothers.