Not thievish but shewing all good faith He censures two vices that are common among servants, petulant replies, and a propensity to steal. [1] The comedies are full of instances of excessively ready talk, by which servants cheat their masters. Nor was it without reason that an exchange of names took place in ancient times, by which "servant "and "thief "became convertible terms. Thus prudence requires that we make our instructions apply to the morals of each individual. By faith he means fidelity to their masters; and therefore, to shew all faith is to act faithfully, without using fraud or doing injury, in transacting the affairs of their masters. That they may adorn the doctrine of God our Savior in all things This ought to be a very sharp spur of exhortation to us, when we learn that our becoming conduct adorns the doctrine of God, which, at the same time, is a mirror of his glory. And, indeed, we see that this usually happens; as, on the other hand, our wicked life brings disgrace upon it; for men commonly judge of us from our works. But this circumstance ought also to be observed, that God deigns to receive an "ornament" from shaves, whose condition was so low and mean that they were wont to be scarcely accounted men; for he does not mean "servants," such as we have in the present day, but slaves, [2] who were bought with money, and held as property, like oxen or horses. And if the life of those men is an ornament to the Christian name, much more let those who are in honor take care that they do not stain it by their baseness.

Footnotes

1 - "Here we see how strictly Paul observed those of whom he was speaking. For the slaves who were in that age were addicted to pillage; and besides, they were contradictory, as if they had not dreaded the strokes with which they were chastised. We find that they sometimes grew hardened, because their masters did not use them gently, but treated them as brute beasts, struck them, teased them, put them to the torture, and frequently beat them, when they were absolutely naked, so that the blood flowed on all sides. Being thus hardened to evil, we must not be astonished if they had such corruption as to take revenge on their masters when they had any opportunity. But now Paul does not fail to exhort them to please their masters, that is, in everything that was good and right -- an exception which he makes in other passages" -- Fr. Ser.

2 - "Des esclaves ou serfs." -- "Slaves or serfs."

Not purloining - Not to appropriate to themselves what belongs to their masters. The word "purloin" means, literally, to take or carry away for oneself; and would be applied to an approbation to oneself of what pertained to a common stock, or what belonged to one in whose employ we are - as the embezzlement of public funds. Here it means that the servant was not to apply to his own use what belonged to his master; that is, was not to pilfer - a vice to which, as all know, servants, and especially slaves, are particularly exposed; see the word explained in the notes at Acts 5:2.
But showing all good fidelity - In laboring, and in taking care of the property intrusted to them.
That they may adorn the doctrine of God our Saviour in all things - That they may show the fair influence of religion on them, in all respects, making them industrious, honest, kind, and obedient. They were to show that the effect of the religion which they professed was to make them better fitted to discharge the duties of their station in life, however humble; or that its influence on them was desirable in every respect. In this way, they might hope also that the minds of their masters might be reached, and that they might be brought to respect and love the gospel. Hence, learn:
(1) that one in the most humble walk of life may so live as to be an ornament to religion, as well as one favored with more advantages.
(2) that servants may do much good, by so living as to show to all around them that there is a reality in the gospel, and to lead others to love it.
(3) if in this situation of life, it is a duty so to live as to adorn religion, it cannot be less so in more elevated situations. A master should feel the obligation not to be surpassed in religious character by his servant.

Not purloining - Μη νοσφιζομενους· Neither giving away, privately selling, nor in any way wasting, the master's goods. The word signifies, not only stealing but embezzling another's property; keeping back a part of the price of any commodity sold on the master's account. In Acts 5:2, we translate it, to keep back part of the price; the crime of which Ananias and Sapphira were guilty. It has been remarked that among the heathens this species of fraud was very frequent; and servants were so noted for purloining and embezzling their master's property that fur, which signifies a thief, was commonly used to signify a servant; hence that verse in Virgil, Eclog. iii. 16: -
Quid domini faciant, audent cum talia Fures?
"What may not masters do, when servants (thieves) are so bold?"
On which Servius remarks: Proverbs Servo Furem posuit, furta enim specialiter servorum sunt. Sic Plautus de servo, Homo es trium literarum, i.e. fur. "He puts fur, a thief, to signify a servant, because servants are commonly thieves. Thus Plautus, speaking of a servant, says: Thou art a man of three letters, i.e. f-u-r, a thief." And Terence denominates a number of servants, munipulus furum, "a bundle of thieves." Eun. 4, 7, 6. The place in Plautus to which Servius refers is in Aulul., act ii. scene iv. in fine: -
- Tun', trium literarum homo,
Me vituperas? F-u-r, etiam fur trifurcifer.
"Dost thou blame me, thou man of three letters?
Thou art a thief, and the most notorious of all knaves."
It was necessary, therefore, that the apostle should be so very particular in his directions to servants, as they were in general thieves almost by profession.

Not purloining..... Or stealing, embezzling their master's substance, taking away, and making use of what is their property, keeping back part of money or goods committed to their trust: the word is used in the case of Ananias and Sapphira. Acts 5:2,
but showing all good fidelity; approving themselves to be faithful servants in everything they are intrusted with:
that they may adorn the doctrine of God our Saviour in all things; Christ is our alone Saviour, and he is truly and properly God, and so fit and able to be a Saviour; and the Gospel is his doctrine, not only what he himself preached, when on earth, but it is a doctrine concerning him; concerning his deity, and the dignity of his person, and concerning his office as Mediator, and the great salvation by him; and which are so many reasons why it should be adorned by a suitable life and conversation; for this is what becomes the Gospel of Christ, throws a beauty upon it, and is ornamental to it; and in this way the doctrine of Christ may be, and ought to be, adorned by servants, as well as others: to adorn the Gospel, is first to believe and receive it, then to profess it, and hold fast that profession, and walk worthy of it. Two of Stephens's copies read, "in", or "among all men".

Not purloining--Greek, "Not appropriating" what does not belong to one. It means "keeping back" dishonestly or deceitfully (Acts 5:2-3).
showing--manifesting in acts.
all--all possible.
good--really good; not so in mere appearance (Ephesians 6:5-6; Colossians 3:22-24). "The heathen do not judge of the Christian's doctrines from the doctrine, but from his actions and life" [CHRYSOSTOM]. Men will write, fight, and even die for their religion; but how few live for it! Translate, "That they may adorn the doctrine of our Saviour God," that is, God the Father, the originating author of salvation (compare Note, see on 1-Timothy 1:1). God deigns to have His Gospel-doctrine adorned even by slaves, who are regarded by the world as no better than beasts of burden. "Though the service be rendered to an earthly master, the honor redounds to God, as the servant's goodwill flows from the fear of God" [THEOPHYLACT]. Even slaves, low as is their status, should not think the influence of their example a matter of no consequence to religion: how much more those in a high position. His love in being "our Saviour" is the strongest ground for our adorning His doctrine by our lives. This is the force of "For" in Titus 2:11.

Showing all good fidelity - Soft, obliging faithfulness That they may adorn the doctrine of God our Saviour - More than St. Paul says of kings. How he raises the lowness of his subject! So may they, the lowness of their condition.