1 Timothy 6:3

If any man teach otherwise
Or another doctrine, as the Syriac version renders it; a doctrine different from what the apostle had now taught, concerning the duty of servants to their masters; as did the false teachers, who despised dominion or government; not only civil government, and so spoke evil of rulers and magistrates; and church government, and therefore reviled the apostles, elders, and pastors of churches; but family government, and encouraged disobedience to parents and masters; see ( 2 Peter 2:10 ) ( Jude 1:8 )

or teach another doctrine,
from that of the Bible, of Christ and his apostles:

and consent not to wholesome words:
such as the doctrines of the Gospel; they are food to the saints, milk for babes, and meat for strong men; they are sweet and savoury food to a spiritual taste; they are nourishing, and the means of a spiritual growth; they are salutary and healthful; they have no corruption, taint, or poison in them:

[even] the words of our Lord Jesus Christ;
the doctrines which he preached when on each, who was anointed with the Spirit of God without measure, to preach the Gospel, and by whom all the doctrines of grace and truth came; or the doctrines relating to Christ, to his person, offices, grace, righteousness, sacrifice and satisfaction; to what he is, has done, does, and will do.

And to the doctrine which is according to godliness.
The whole Gospel is the mystery of godliness; it is the truth that is after it, and it has a tendency to promote true godliness in heart and life: even such is the nature of the more distinguishing doctrines of it, which are charged with licentiousness; as the doctrine of eternal and personal election; for though it is not of works, but of grace, yet holiness is a means fixed in election, and an end secured by it; it is the source and spring of all real holiness; holiness of heart is an evidence of it to believers themselves; and holiness of life is an evidence of it to the world; nor can anything more powerfully engage men to it than the consideration that they are chosen of God to grace and glory. The covenant of grace, which is absolute and unconditional, provides for both internal and external holiness; and the promises of it, under the influence of grace, powerfully operate in the minds of believers, to the cleansing of them from all impurity of flesh and spirit, and to the perfecting of holiness in the fear of the Lord: and so the doctrines of free justification, by the righteousness of Christ, which does not make void the law, nor discourage good works; and of Christ's bearing the sins of his people, and making satisfaction for them, that they being dead to sin might live unto righteousness; and of redemption of them by the blood of Christ from sin, Satan, and the law, which is done that they might be a peculiar people, zealous of good works; and of the effectual calling of them, which is with an holy calling; and of their final perseverance in grace and holiness, are all of them doctrines according to godliness, and greatly encourage and promote it: now, whoever does not accede to these truths, and acquiesce in them, but differs from them, and teaches the reverse of them, he is a false teacher, and is all that the apostle says in the next words.