For robbers The Latin word plagium was employed by ancient writers to denote the carrying off or enticing the slave of another man, or the false sale of a freeman. Those who wish to obtain more full information on this subject may consult authors on the civil law, and especially on the Flavian Law. Here Paul glances at several classes, which include briefly every kind of transgressions. The root is obstinacy and rebellion; which he describes by the first two words. Ungodly and sinners appear to denote transgressors of the first and second table. To these he adds the profane and impure, or those who lead a base and dissolute life. There being chiefly three ways in which men injure their neighbors, namely, violence, dishonesty, and lust, he reproves successively those three ways, as may be easily seen. First, he speaks of violence as manifested by manslayers and murderers of parents; secondly, he describes shameful uncleanness; and thirdly, he comes down to dishonesty and other crimes. If there is anything else that is contrary to sound doctrine In this clause he maintains that his gospel is so far from being opposed to the law, that it is a powerful confirmation of it. He declares that by his preaching, he supports that very sentence which the Lord pronounced in his law, against "everything that is contrary to sound doctrine." Hence it follows, that they who depart from the gospel, do not adhere to the spirit of the law, but merely pursue its shadow. Sound doctrine is contrasted with frivolous questions about which he says (1-Timothy 6:3) that foolish teachers are in an unhealthy condition and which, on account of the effect produced by them, are called diseased. [1]

Footnotes

1 - "All vices are contrary to sound doctrine. For what is the advantage to be derived from the Word of God? It is the pasture of our souls; and, next, it is a medicine. We have bread and various kinds of food for the nourishment of our body: the word of God is of the same use for our souls. But it is more advantageous in this respect, that, when we are diseased with our vices, when there are many corruptions and wicked desires, we must be purged of them; and the Word of God serves us for various purposes, for purging, for blood-letting, for drink, and for diet. In short, all that physicians can apply to the human body, for healing its diseases, is not a tenth part of what the Word of God accomplishes for the health of our souls On that account Paul speaks here of sound doctrine. For inquisitive and ambitious persons are always in a diseased state; they have no health in them they are like those unhappy patients who have lost their appetite, and who suck and lick, but cannot receive any nourishment. But when the Word of God is applied in a right manner, there must be a contest; there was a war against every vice; and the Word of God must condemn them in such a manner that the hearts of men shall be touched and pierced -- shall be humbled and laid low with sincere repentance to groan before God; and, if there be nothing else, that they shall at least be convinced, that they shall have remorse within themselves, that they may so be an example to all that are not altogether incorrigible. This is the way in which the Lord wishes that his word may be applied to a good use." -- Fr. Ser.

For whoremongers - Leviticus 19:29; Leviticus 20:5.
For them that defile themselves with mankind - Sodomites. See the evidence that this crime abounded in ancient times, in the notes on Romans 1:27. It was forbidden by the law of Moses, and was punishable with death; Leviticus 20:13.
For menstealers - The word here used - ἀνδρᾶποδιστής andrapodistēs - occurs nowhere else in the New Testament. It properly means one who steals another for the purpose of making him a slave - a kidnapper. This is the common way in which people are made slaves. Some, indeed, are taken in war and sold as slaves, but the mass of those who have been reduced to servitude have become slaves by being kidnapped. Children are stolen from their parents, or wives from their husbands, or husbands from their wives, or parents from their children, or whole families are stolen together. None become slaves voluntarily, and consequently the whole process of making slaves partakes of the nature of theft of the worst kind. What theft is like that of stealing a man's children, or his wife, or his father or mother? The guilt of manstealing is incurred essentially by those who purchase those who are thus stolen - as the purchaser of a stolen horse, knowing it to be so, participates in the crime. A measure of that criminality also adheres to all who own slaves, and who thus maintain the system - for it is a system known to have been originated by theft. This crime was expressly forbidden by the law of God, and was made punishable with death; Exodus 21:16; Deuteronomy 24:7.
For liars - Leviticus 6:2-4; Leviticus 19:11.
For perjured persons - Those who swear falsely; Leviticus 19:12; Leviticus 6:3; Exodus 20:7.
And if there be any other thing that is contrary to sound doctrine - To sound or correct teaching - for so the word doctrine means. The meaning is, if there is anything else that is opposed to the instruction which the law of God gives.

For whoremongers - Πορνοις· Adulterers, fornicators, and prostitutes of all sorts.
Them that defile themselves with mankind - Αρσενοκοιταις· From αρσην, a male, and κοιτη, a bed; a word too bad to be explained. A sodomite.
Men-stealers - Ανδραποδισταις· Slave-dealers; whether those who carry on the traffic in human flesh and blood; or those who steal a person in order to sell him into bondage; or those who buy such stolen men or women, no matter of what color or what country; or those who sow dissensions among barbarous tribes in order that they who are taken in war may be sold into slavery; or the nations who legalize or connive at such traffic: all these are men-stealers, and God classes them with the most flagitious of mortals.
For liars - Ψευσταις· They who speak for truth what they know to be false; and even they who tell the truth in such a way as to lead others to draw a contrary meaning from it.
For perjured persons - Επιορκοις· From επι, against, and ὁρκος, an oath; such as do or leave undone any thing contrary to an oath or moral engagement, whether that engagement be made by what is called swearing, or by an affirmation or promise of any kind.
And if there be any other thing - Every species of vice and immorality, all must be necessarily included, that is contrary to sound doctrine - to the immutable moral law of God, as well as to the pure precepts of Christianity where that law is incorporated, explained, and rendered, if possible, more and more binding.

For whoremongers,.... Fornicators and adulterers, who were transgressors of the seventh command, Exodus 20:14 these God will judge, and such shall have their portion in the lake that burns with fire and brimstone:
for them that defile themselves with mankind; who are guilty of sodomy; such, according to the law, were to die, Leviticus 18:22 the wrath of God was revealed from heaven in a very visible and remarkable manner against this abomination, by raining fire and brimstone upon Sodom and Gomorrah, and upon the cities of the plain, who defiled themselves in this way:
for men stealers; who decoyed servants or free men, and stole them away, and sold them for slaves; see the laws against this practice, and the punishment such were liable to, in Exodus 21:16. This practice was condemned by the Flavian law among the Romans (i), and was not allowed of among the Grecians (k); the death with which such were punished was strangling, according to the Jews (l):
for liars; who speak what is false, against their own knowledge and conscience, and with a design to deceive; who lie against their neighbours, and act falsely and deceitfully in trade and merchandise, as well as speak that which is not true; see Leviticus 6:2.
for perjured persons; who take a false oath on any account, and bear false witness against their neighbour. Now upon, and against all, and each of these, the law lies, as an accusing, threatening, and cursing law:
and if there be any other thing that is contrary to sound doctrine; the law lies against it, takes notice of it, charges with it, condemns and punishes for it: by "sound doctrine" is meant the doctrine of the Gospel, which is in itself pure and incorrupt, and is the cause of soundness and health to others; it is health to the navel, and marrow to the bones; its doctrines are the wholesome words of Christ, and by them souls are nourished up unto eternal life; when the errors and heresies of men are in themselves rotten and corrupt, and also eat as do a canker. Here it may be observed, that there is an entire harmony and agreement between the Gospel and the law, rightly understood and used; what is contrary to the one, is also to the other; the Gospel no more countenances sin than the law does; and whatever is repugnant to the Gospel is liable to be punished by the law,
(i) Pompon. Laetus de Leg. Romans. p. 154. (k) Philostrat. Vit. Apollon. l. 8. c. 3. (l) Misna Sanhedria, c. 10. sect. 1. & Maimon. Hilch. Geniba, c. 9. sect. 1.

whoremongers, &c.--sinners against the seventh commandment.
men-stealers--that is, slave dealers. The most heinous offense against the eighth commandment. No stealing of a man's goods can equal in atrocity the stealing of a man's liberty. Slavery is not directly assailed in the New Testament; to have done so would have been to revolutionize violently the existing order of things. But Christianity teaches principles sure to undermine, and at last overthrow it, wherever Christianity has had its natural development (Matthew 7:12).
liars . . . perjured--offenders against the ninth commandment.
if there be any other thing--answering to the tenth commandment in its widest aspect. He does not particularly specify it because his object is to bring out the grosser forms of transgression; whereas the tenth is deeply spiritual, so much so indeed, that it was by it that the sense of sin, in its subtlest form of "lust," Paul tells us (Romans 7:7), was brought home to his own conscience. Thus, Paul argues, these would-be teachers of the law, while boasting of a higher perfection through it, really bring themselves down from the Gospel elevation to the level of the grossly "lawless," for whom, not for Gospel believers, the law was designed. And in actual practice the greatest sticklers for the law as the means of moral perfection, as in this case, are those ultimately liable to fall utterly from the morality of the law. Gospel grace is the only true means of sanctification as well as of justification.
sound--healthy, spiritually wholesome (1-Timothy 6:3; 2-Timothy 1:13; Titus 1:13; Titus 2:2), as opposed to sickly, morbid (as the Greek of "doting" means, 1-Timothy 6:4), and "canker" (2-Timothy 2:17). "The doctrine," or "teaching, which is according to godliness" (1-Timothy 6:3).

Manstealers - The worst of all thieves, in comparison of whom, highwaymen and housebreakers are innocent. What then are most traders in negroes, procurers of servants for America, and all who list soldiers by lies, tricks, or enticements?