Ye have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked mournfully before the LORD of hosts?

Ye have said, It is vain to serve God; and what profit is it that we have kept his charge, and that we have walked mournfully before Jehovah of hosts?

And you have said: What have we spoken against thee? You have said: He laboureth in vain that serveth God, and what profit is it that we have kept his ordinances, and that we have walked sorrowful before the Lord of hosts?

Ye say, It is vain to serve God; and what profit is it that we keep his charge, and that we walk mournfully before Jehovah of hosts?

Ye have said, 'A vain thing to serve God! And what gain when we kept His charge? And when we have gone in black, Because of Jehovah of Hosts?

You have said, It is no use worshipping God: what profit have we had from keeping his orders, and going in clothing of sorrow before the Lord of armies?

And you have said, "What have we spoken against you?" You have said, "He labors in vain who serves God," and, "What advantage is it that we have kept his precepts, and that we have walked sorrowfully in the sight of the Lord of hosts?

Dixistis, Frustra servitur Deo et quae utilitas? quia custodivimus custodiam ejus, et quia ambulavimus supplices (vel, humiles; in obscuro vulta, ad verbum) coram facie Iehovae exercituum.

Ye have said, It is vain to serve the God - o "as receiving no gain or reward for their service. This is the judgment of the world, whereby worldlings think pious, just, sincere, strict men, vain, i. e., especially when they see them impoverished, despised, oppressed, afflicted, because they know not the true goods of virtue and eternal glory, but measure all things by sight, sense and taste. Truly, if the righteous had not hope of another and better life, in vain would they afflict themselves, and bear the afflictions of others. For, as the Apostle says 1-Corinthians 15:19. 'If in this life only we have hope in Christ, we are of all men most miserable.' But now, hoping for another blessed and eternal life for the slight tribulations of this, we are the happiest of all men."
And we have walked mournfully - o Again they take in their mouths the words of Psalmists, that they took the garb of mourners, going about mourning before God for their country's afflictions.

Ye have said, It is vain to serve God - They strove to destroy the Divine worship; they asserted that it was vanity; that, if they performed acts of worship, they should be nothing the better; and if they abstained, they should be nothing the worse. This was their teaching to the people.
Walked mournfully - Even repentance they have declared to be useless. This was a high pitch of ungodliness; but see what follows; behold the general conclusions of these reprobates: -

Ye have said, it is vain to serve God,.... This they said in their hearts, if not with their lips, that it was a vain thing for a man to serve God; he got nothing by it; he had no reward for it; it fared no better with him than the wicked; nay, the wicked fared better than he; and therefore who would be a worshipper of God? see Job 21:15. Abarbinel understands this also with respect to God, who is worshipped; to whom worship, say these men, is no ways profitable, nor does he regard it; see Job 35:7 and therefore it is in vain to serve him, since neither he, nor we, are the better for it:
and what profit is it that we have kept his ordinance; or "his observation" (n); that is, have observed that which he commanded to be observed; this respects not any single and particular ordinance, but every ordinance of God: the Sadducees of those times seem designed, who denied the resurrection of the dead, and a future state of rewards and punishments, and so might well conclude it in vain to serve God:
and that we have walked mournfully before the Lord of hosts? or "in black" (o); which is the habit of mourners; see Psalm 38:6 with an humble spirit, as Jarchi interprets it; or with humiliation (or contrition) of spirit, as the Targum, which paraphrases the whole verse thus,
"ye have said, he gains nothing who worships before the Lord; and what mammon (or riches) do we gain because we have kept the observation of his word, and because we have walked in contrition of spirit before the Lord of hosts?''
Aben Ezra and Abarbinel seem to understand this last clause of their being afflicted and suffering for the sake of religion, and which they endured in vain, seeing they were not respected and rewarded for it; but the other sense is best, which represents them as sincere penitents, and humble worshippers of God in their own account, and yet were not taken notice of by him: it seems to describe the Pharisees, who disfigured their faces, and affected down looks and sorrowful countenances (p).
(n) "observationem ejus", Junius & Tremellius, Piscator, Drusius; "observantiam ejus", Cocceius. (o) "atrate", Junius & Tremellius, Piscator; so Stockius, p. 926; "pullati", Tigurine version; "atrati", Cocceius. (p) The word is used by Josephus ben Gorion for sincere walking, l. 6. c. 20. p. 612. Vid. Not. Breithaupt. in ib.; it is interpreted "humbly" by R. Song. Urbin. Ohel Moed, fol. 102. 2.

what profit . . . that we . . . kept, &c.--(See on Malachi 2:17). They here resume the same murmur against God. Job 21:14-15; Job 22:17 describe a further stage of the same skeptical spirit, when the skeptic has actually ceased to keep God's service. Psalm 73:1-14 describes the temptation to a like feeling in the saint when seeing the really godly suffer and the ungodly prosper in worldly goods now. The Jews here mistake utterly the nature of God's service, converting it into a mercenary bargain; they attended to outward observances, not from love to God, but in the hope of being well paid for in outward prosperity; when this was withheld, they charged God with being unjust, forgetting alike that God requires very different motives from theirs to accompany outward observances, and that God rewards even the true worshipper not so much in this life, as in the life to come.
his ordinance--literally, what He requires to be kept, "His observances."
walked mournfully--in mournful garb, sackcloth and ashes, the emblems of penitence; they forget Isaiah 58:3-8, where God, by showing what is true fasting, similarly rebukes those who then also said, Wherefore have we fasted and Thou seest not? &c. They mistook the outward show for real humiliation.