James 3:1

My brethren, be not many masters, knowing that we shall receive the greater condemnation.

² For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body.

³ Behold, we put bits in the horses’ mouths, that they may obey us; and we turn about their whole body.

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

Compare

BSB: Not many of you should become teachers, my brothers, because you know that we who teach will be judged more strictly.
KJV: My brethren, be not many masters, knowing that we shall receive the greater condemnation.
WEB: Let not many of you be teachers, my brothers, knowing that we will receive heavier judgment.
ASV: Be not many [of you] teachers, my brethren, knowing that we shall receive heavier judgment.
DARBY: Be not many teachers, my brethren, knowing that we shall receive greater judgment.
BLB: Let not many become teachers, my brothers, knowing that we will receive greater judgment.

ÅB: Mine brødre! ikke mange av dere bli lærere, ettersom dere vet at vi skal få dess tungere dom!
OTB: Ikke mange av dere bør strebe etter å bli lærere, mine brødre og søstre, for dere vet at vi som underviser skal bli dømt med større strenghet.
B1930: Mine brødre! ikke mange av eder bli lærere, eftersom I vet at vi skal få dess tungere dom!

1 Timothy 1:7
Desiring to be teachers of the law; understanding neither what they say, nor whereof they affirm.
Read in context
Luke 12:47–48
And that servant, which knew his lord’s will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.
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1 Peter 5:3
Neither as being lords over God’s heritage, but being ensamples to the flock.
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Matthew 23:13
But woe unto you, scribes and Pharisees, hypocrites! for ye shut up the kingdom of heaven against men: for ye neither go in yourselves, neither suffer ye them that are entering to go in.
Read in context
1 Corinthians 12:28
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.
Read in context
Matthew 23:8–10
But be not ye called Rabbi: for one is your Master, even Christ; and all ye are brethren.
Read in context
2 Corinthians 5:10
For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.
Read in context
Romans 2:20–21
An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law.
Read in context