Matthew 23

We have only one Teacher and one Father

8 "But you (pl.), do not be called ‘Rabbi’; because your Teacher is one, the Christ,*Perhaps 4% of the Greek manuscripts omit "the Christ" (as in NIV, NASB, LB, TEV, etc.). and you are all brothers. 9 And do not call anyone on earth your ‘father’; because your Father is one, He who is in the heavens.*Since the second person here is plural, the Lord is evidently referring to calling someone your spiritual father; He is not saying not to acknowledge your physical father. "Your (pl.) Father is one"—obviously they did not all have the same physical father.