But piety with contentment is great gain.

But true faith, with peace of mind, is of great profit:

But piety with sufficiency is great gain.

Of course religion is a great source of gain – when combined with contentment!

But godliness with sufficiency is great gain In an elegant manner, and with an ironical correction, he instantly throws back those very words in an opposite meaning, as if he had said -- "They do wrong and wickedly, who make merchandise of the doctrine of Christ, as if godliness were gain;' though, undoubtedly, if we form a correct estimate of it, godliness is a great and abundant gain." And he so calls it, because it brings to us full and perfect blessedness. Those men, therefore, are guilty of sacrilege, who, being bent on acquiring money, make godliness contribute to their gain. [1] But for our part, godliness is a very great gain to us, because, by means of it, we obtain the benefit, not only of being heirs of the world, but likewise of enjoying Christ and all his riches. With sufficiency. [2] This may refer either to the disposition of the heart, or to the thing itself. If it be understood as referring to the heart, the meaning will be, that "godly persons, when they desire nothing, but are satisfied with their humble condition, have obtained very great gain." If we understand it to be "sufficiency of wealth" (and, for my own part, I like this view quite as well as the other,) it will be a promise, like that in the book of Psalms, "The lions wander about hungry and famished; but they that seek the Lord shall not be in want of any good thing." (Psalm 34:10.) The Lord is always present with his people, and, as far as is sufficient for their necessity, out of his fullness he bestows on each his portion. Thus true happiness consists in piety; and this sufficiency may be regarded as an increase of gain.

Footnotes

1 - "Qui estans addonnez au gain de la bourse, font servir la piete et la doctrine de vraye religion a leur gain." -- "Who, being devoted to the gain of the purse, make piety and the doctrine of true religion contribute to their gain.

2 - "Avec suffisance, ou, contentement." -- "With sufficiency, or, with contentment."

But godliness - Piety; religion. The meaning is, that real religion should be regarded as the greatest and most valuable acquisition. "With contentment." This word, as now used, refers to a state of mind; a calm and satisfied feeling; a freedom from murmuring and complaining. The idea is, that "piety, connected with a contented mind - or a mind acquiescing in the allotments of life - is to be regarded as the real gain." Tyndale gives substantially the same interpretation: "Godliness is great riches, if a man be content with that he hath" Coverdale: "Howbeit, it is of great advantage, who is so godly, and holdeth him content with that he hath." The word which is used here - αὐτάρκεια autarkeia - means, properly, "self-sufficency," and is used here, in a good sense, to denote a mind satisfied with its lot. If there be true religion, united with its proper accompaniment, peace of mind, it is to be regarded as the true riches. The object of the apostle seems to be, to rebuke those who supposed that property constituted everything that was worth living for. He tells them, therefore, that the true gain, the real riches which we ought to seek, is religion, with a contented mind. This does more to promote happiness than wealth can ever do, and this is what should be regarded as the great object of life.

But godliness with contentment is great gain - The word godliness, ευσεβεια, here, and in several other places of this epistle, signifies the true religion, Christianity; and the word contentment, αυταρκεια, signifies a competency, a sufficiency; that measure or portion of secular things which is necessary for the support of life, while the great work of regeneration is carrying on in the soul. Not what this or the other person may deem a competency, but what is necessary for the mere purposes of life in reference to another world; food, raiment, and lodging. See 1-Timothy 6:7. So, if a man have the life of God in his soul, and just a sufficiency of food and raiment to preserve and not burden life, he has what God calls great gain, an abundant portion.
It requires but little of this world's goods to satisfy a man who feels himself to be a citizen of another country, and knows that this is not his rest.

(6) But godliness with contentment is great gain.
(6) He properly dismisses the name of gain and lucre, confessing that godliness is great gain, but in a far different manner, that is, because it brings true sufficiency.

But godliness with contentment is great gain. By "godliness" is not meant any particular grace, but all the graces of the Spirit of God; as faith, hope, love, fear, &c. the whole of internal religion, as it shows itself in outward worship, and in all acts of holiness of life and conversation; and which the doctrine that is according to godliness teaches and engages to; and this is gain, very great gain indeed. A man possessed of true godliness is a gaining, thriving, man: such as are godly, or truly gracious, they are come into good and happy circumstances, and are possessor of the true, solid, satisfying, durable, and unsearchable riches of grace; all their debts are paid, they are richly clothed, and deliciously fed, and are in a good family, even the household of God, who before were in debt, arrayed in rags, were in a starving condition, and strangers and foreigners; yea, they are heirs of God, joint heirs with Christ, and have both a right and a meetness for the heavenly inheritance; they are now made kings and priests to God, and, in the present state of things, have God to be their portion, and exceeding great reward; they have an interest in Christ, and in all spiritual blessings in him, and have the Spirit as the earnest of their future inheritance; they are rich in faith, and in good works; their souls, which were lost, are gained, and shall be saved with an everlasting salvation; and ere long they will be possessed of all the riches of glory, signified by a house not made with hands, a city which has foundations, whose builder and maker is God, an incorruptible inheritance, and a kingdom and glory: how great is the gain of godliness! And what adds to this gain, and now goes along with it, is "contentment"; for this is not to be considered as the condition of godliness being great gain, as if it was not so without it; but as the effect of godliness, what that produces, and as a part of its gain. The word here used signifies "sufficiency"; and so it is rendered in the Vulgate Latin version: it designs a competency of the good things of this life; and what that is, is expressed in 1-Timothy 6:8 and such God gives to them that fear him, his godly ones, who shall lack no good thing convenient for them; for godliness has the promise of this life, as well as of that which is to come; and God does give to such all things pertaining to life and godliness, even all things richly to enjoy. The word indeed properly signifies "self-sufficiency", which in its strict sense, only belongs to God, who is "El-Shaddai", God all-sufficient and self-sufficient; but here it intends such a sufficiency as a man himself judges to be so; for this phrase does not so much design the thing itself, which is a sufficiency, as the opinion, the sense which the godly man has of it, who himself judges it, as Jacob did, to be enough; and such a man is content with what he has, and thankful for it, submits quietly to the will of God, and patiently bears every adverse providence: and this is now the fruit and effect of godliness, or true grace, and is a considerable part of that gain which godliness brings with it; and such a man is a happy man indeed, let his circumstances be what they will. The Jews have a saying (n), that
"he is a rich man whose spirit rests in, or is contented with his riches;''
that is, as the gloss explains it.
"who rejoices in his portion, be it little or much: thus, though godliness is not gain, nor gain godliness, in the sense of the false teachers, yet is it true gain in a spiritual sense.''
(n) T. Bab. Sabbat, fol. 25. 2.

Those that make a trade of Christianity to serve their turn for this world, will be disappointed; but those who mind it as their calling, will find it has the promise of the life that now is, as well as of that which is to come. He that is godly, is sure to be happy in another world; and if contented with his condition in this world, he has enough; and all truly godly people are content. When brought into the greatest straits, we cannot be poorer than when we came into this world; a shroud, a coffin, and a grave, are all that the richest man in the world can have from all his wealth. If nature should be content with a little, grace should be content with less. The necessaries of life bound a true Christian's desires, and with these he will endeavour to be content. We see here the evil of covetousness. It is not said, they that are rich, but they will be rich; who place their happiness in wealth, and are eager and determined in the pursuit. Those that are such, give to Satan the opportunity of tempting them, leading them to use dishonest means, and other bad practices, to add to their gains. Also, leading into so many employments, and such a hurry of business, as leave no time or inclination for spiritual religion; leading to connexions that draw into sin and folly. What sins will not men be drawn into by the love of money! People may have money, and yet not love it; but if they love it, this will push them on to all evil. Every sort of wickedness and vice, in one way or another, grows from the love of money. We cannot look around without perceiving many proofs of this, especially in a day of outward prosperity, great expenses, and loose profession.

But--Though they err in this, there is a sense in which "piety is" not merely gain, but "great means of gain": not the gaining which they pursue, and which makes men to be discontented with their present possessions, and to use religion as "a cloak of covetousness" (1-Thessalonians 2:5) and means of earthly gain, but the present and eternal gain which piety, whose accompaniment is contentment, secures to the soul. WIESINGER remarks that Paul observed in Timothy a tendency to indolence and shrinking from the conflict, whence he felt (1-Timothy 6:11) that Timothy needed cautioning against such temptation; compare also the second Epistle. Not merely contentment is great gain (a sentiment of the heathen CICERO [Paradox 6], "the greatest and surest riches"), but "piety with contentment"; for piety not only feels no need of what it has not, but also has that which exalts it above what it has not [WIESINGER]. The Greek for contentment is translated "sufficiency" (2-Corinthians 9:8). But the adjective (Philippians 4:11) "content"; literally, "having a sufficiency in one's self" independent of others. "The Lord always supplies His people with what is necessary for them. True happiness lies in piety, but this sufficiency [supplied by God, with which moreover His people are content] is thrown into the scale as a kind of overweight" [CALVIN] (1Ki. 17:1-16; Psalm 37:19; Isaiah 33:6, Isaiah 33:16; Jeremiah 37:21).

Godliness with contentment. In contrast with this false view a godly life with contentment is a great gain. It brings its greatest gain in eternity.
For we brought nothing. See Job 1:21. Since we must leave the earth as we came into it, contentment and an immortal hope are better than earthly gains.
Having food and raiment. Having the necessities of life let us be content without piling up wealth.

But godliness with content - The inseparable companion of true, vital religion. Is great gain - Brings unspeakable profit in time, as well as eternity.