The King James Bible is consistent:
Matthew 23:10 KJB Neither be ye called masters: for one is your Master, even Christ.
1 Cor 12:28 KJB And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues.
Eph 4:11 KJB And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers;
Now look at these verses in the New King James Version.
Matthew 23:10 NKJV And do not be called teachers; for One is your Teacher, the Christ.
1 Cor 12:28 NKJV And God has appointed these in the church: first apostles, second prophets, third teachers, after that miracles, then gifts of healings, helps, administrations, varieties of tongues.
The NKJB has Jesus saying not to be called teachers, yet has God appointing teachers. The NKJV fabricates a contradiction where there should be not be one.
AMP Do not let yourselves be called leaders or teachers; for One is your Leader (Teacher), the Christ.
CEB Don’t be called teacher, because Christ is your one teacher.
DARBY Neither be called instructors, for one is your instructor, the Christ.
ESV Neither be called instructors, for you have one instructor, the Christ.
ISV Nor are you to be called ‘Teachers,’ because you have only one teacher, the Messiah!
LEB And do not be called teachers, because one is your teacher, the Christ.
MSG “Don’t let people do that to you, put you on a pedestal like that. You all have a single Teacher, and you are all classmates.
MEV Nor be called teachers, for you have one Teacher, the Christ.
MOUNCE Nor should you be called ‘instructors,’ because Christ is your only instructor. ·
NET Nor are you to be called ‘teacher,’ for you have one teacher, the Christ.
NIRV You shouldn’t be called ‘teacher.’ You have one Teacher, and he is the Messiah.
NIV Nor are you to be called instructors, for you have one Instructor, the Messiah.
NIVUK Nor are you to be called instructors, for you have one Instructor, the Messiah.
NKJV And do not be called teachers; for One is your Teacher, the Christ.
NLT And don’t let anyone call you ‘Teacher,’ for you have only one teacher, the Messiah.
NRSV Nor are you to be called instructors, for you have one instructor, the Messiah.
NRSVA Nor are you to be called instructors, for you have one instructor, the Messiah.
NRSVACE Nor are you to be called instructors, for you have one instructor, the Messiah.
NRSVCE Nor are you to be called instructors, for you have one instructor, the Messiah.
NTE Nor should you be called “teacher”, because you have one teacher, the Messiah.
TLV Nor are you to be called teachers; for One is your Teacher, the Messiah.
The word of God is infallible, and without error. At least in the King James Bible. The modern versions introduce errors and contradictions that would not otherwise exist!