Matthew Henry Commentary 1 Timothy 6:1-5

"Let as many as are servants under the yoke count their own masters worthy of all honor, that the name of God and the doctrine be not blasphemed. And they that have believing masters, let them not despise them, because they are brethren; but let them serve them the rather, because they that partake of the benefit are believing and beloved. These things teach and exhort. If any man teacheth a different doctrine, and consenteth not to sound words, [even] the words of our Lord Jesus Christ, and to the doctrine which is according to godliness; he is puffed up, knowing nothing, but doting about questionings and disputes of words, whereof cometh envy, strife, railings, evil surmisings, wranglings of men corrupted in mind and bereft of the truth, supposing that godliness is a way of gain." — 1 Timothy 6:1-5 (ASV)

Christians were not to suppose that religious knowledge or Christian privileges gave them any right to despise unbelieving masters, or to disobey lawful commands, or to expose their faults to others.

And those who enjoyed the privilege of living with believing masters were not to withhold due respect and reverence simply because they were equals in religious privileges. Instead, they were to serve with double diligence and cheerfulness, because their masters were believers in Christ and partakers of His free salvation.

We are not to consent to any words as wholesome, except the words of our Lord Jesus Christ; to these we must give sincere agreement.

Commonly, those who know least are most proud; for they do not know themselves.

From this arise envy, strife, abusive speech, evil suspicions, and disputes full of cleverness but lacking substance. These occur between people of corrupt and worldly minds, who are ignorant of the truth and its sanctifying power, and are seeking their own worldly advantage (1 Timothy 6:6–10).