Matthew 23:10

⁸ But you are not to be called ‘Rabbi,’ for you have one Teacher, and you are all brothers.

⁹ And do not call anyone on earth your father, for you have one Father, who is in heaven.

Nor are you to be called instructors, for you have one Instructor, the Christ.

¹¹ The greatest among you shall be your servant.

¹² For whoever exalts himself will be humbled, and whoever humbles himself will be exalted.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: Nor are you to be called instructors, for you have one Instructor, the Christ.
KJV: Neither be ye called masters: for one is your Master, even Christ.
WEB: Neither be called masters, for one is your master, the Christ.
ASV: Neither be ye called masters: for one is your master, [even] the Christ.
DARBY: Neither be called instructors, for one is your instructor, the Christ.
BLB: Neither shall you⁺ be called instructors, because One is your⁺ Instructor, the Christ.

ÅB: Dere skal ikke la dere kalles lærere heller; for dere har bare en lærer, Kristus.
OTB: Heller ikke skal dere kalles ledere, for dere har én Leder, Kristus.
B1930: Heller ikke skal I la eder kalle lærere; for en er eders lærer, Kristus.