3:1 “I am about to send my messenger, who will clear the way before me. Indeed, the Lord you are seeking will suddenly come to his temple, and the messenger of the covenant, whom you long for, is certainly coming,” says the LORD who rules over all.
‘Consider the trees. Take the vine for an example. First it sheds its leaves; then it buds; after that it spreads its leaves; then it flowers; then come the sour grapes; and after them follows the ripe fruit. Of a truth, yet a little while, and his will shall suddenly be accomplished; the Holy Scripture itself bearing witness that he shall quickly come, and not tarry; and that the Lord shall suddenly come to his temple, even the Holy One whom ye look for.’ (Clement of Rome)
3:2 Who can endure the day of his coming? Who can keep standing when he appears? For he will be like a refiner’s fire, like a launderer’s soap. 3:3 He will act like a refiner and purifier of silver and will cleanse the Levites and refine them like gold and silver. Then they will offer the LORD a proper offering. 3:4 The offerings of Judah and Jerusalem will be pleasing to the LORD as in former times and years past.
Refiner’s fire – This verse has been taken by some (e.g. Steve Chalke, in The Lost Message of Paul, ch. 25) as proving that the fire of God’s final judgement is remedial, and not destructive. But the idea of the purification of the penitent (here, and in Isa 4:4) does not exclude that of the destruction of the impenitent (Mal 4:1).
3:5 “I will come to you in judgment. I will be quick to testify against those who practice divination, those who commit adultery, those who break promises, and those who exploit workers, widows, and orphans, who refuse to help the immigrant and in this way show they do not fear me,” says the LORD who rules over all.
Resistance to the Lord through Selfishness
3:6 “Since, I, the LORD, do not go back on my promises, you, sons of Jacob, have not perished. 3:7 From the days of your ancestors you have ignored my commandments and have not kept them! Return to me, and I will return to you,” says the LORD who rules over all. “But you say, ‘How should we return?’ 3:8 Can a person rob God? You indeed are robbing me, but you say, ‘How are we robbing you?’ In tithes and contributions! 3:9 You are bound for judgment because you are robbing me—this whole nation is guilty.
“I the Lord do not change” – This was the text of the first published sermon of C.H. Spurgeon, entitle, ‘The Immutability of God’, and preached on the morning of January 7th, 1855 at New Park Street Chapel, Southwark. Here are the opening words of the sermon:-
‘It has been said by some one that “the proper study of mankind is man.” I will not oppose the idea, but I believe it is equally true that the proper study of God’s elect is God; the proper study of a Christian is the Godhead. The highest science, the loftiest speculation, the mightiest philosophy, which can ever engage the attention of a child of God, is the name, the nature, the person, the work, the doings, and the existence of the great God whom he calls his Father. There is something exceedingly improving to the mind in a contemplation of the Divinity. It is a subject so vast, that all our thoughts are lost in its immensity; so deep, that our pride is drowned in its infinity. Other subjects we can compass and grapple with; in them we feel a kind of self-content, and go our way with the thought, “Behold I am wise.” But when we come to this master-science, finding that our plumb-line cannot sound its depth, and that our eagle eye cannot see its height, we turn away with the thought, that vain man would be wise, but he is like a wild ass’s colt; and with the solemn exclamation, “I am but of yesterday, and know nothing.” No subject of contemplation will tend more to humble the mind, than thoughts of God. We shall be obliged to feel-“Great God, how infinite art thou, What worthless worms are we!”
But while the subject humbles the mind it also expands it. He who often thinks of God, will have a larger mind than the man who simply plods around this narrow globe. He may be a naturalist, boasting of his ability to dissect a beetle, anatomize a fly, or arrange insects and animals in classes with well nigh unutterable names; he may be a geologist, able to discourse of the megatherium and the plesiosaurus, and all kinds of extinct animals, he may imagine that his science, whatever it is, ennobles and enlarges his mind. I dare say it does, but after all, the most excellent study for expanding the soul, is the science of Christ, and him crucified, and the knowledge of the Godhead in the glorious Trinity. Nothing will so enlarge the intellect, nothing so magnify the whole soul of man, as a devout, earnest, continued investigation of the great subject of the Deity. And, whilst humbling and expanding, this subject is eminently consolatory. Oh, there is, in contemplating Christ, a balm for every wound; in musing on the Father, there is a quietus for every grief; and in the influence of the Holy Ghost, there is a balsam for every sore. Would you lose your sorrows? Would you drown your cares? Then go, plunge yourself in the Godhead’s deepest sea; be lost in his immensity; and you shall come forth as from a couch of rest, refreshed and invigorated. I know nothing which can so comfort the soul; so calm the swelling billows of grief and sorrow; so speak peace to the winds of trial, as a devout musing upon the subject of the Godhead. It is to that subject that I invite you this morning.’
3:10 “Bring the entire tithe into the storehouse so that there may be food in my temple. Test me in this matter,” says the LORD who rules over all, “to see if I will not open for you the windows of heaven and pour out for you a blessing until there is no room for it all. 3:11 Then I will stop the plague from ruining your crops, and the vine will not lose its fruit before harvest,” says the LORD who rules over all. 3:12 “All nations will call you happy, for you indeed will live in a delightful land,” says the LORD who rules over all.
Resistance to the Lord through Self-sufficiency
3:13 “You have criticized me sharply,” says the LORD, “but you ask, ‘How have we criticized you?’ 3:14 You have said, ‘It is useless to serve God. How have we been helped by keeping his requirements and going about like mourners before the LORD who rules over all? 3:15 So now we consider the arrogant to be happy; indeed, those who practice evil are successful. In fact, those who challenge God escape!’ ”
‘This is another charge to the doubters among the pious remnant of Israel, who, seeing the success of the wicked, said it is vain to serve God. Deuteronomy was their Canon, and Deuteronomy said that if men sinned they decayed, if they were righteous they prospered. How different were the facts of experience! The evil men succeeded: the good won no gain by their goodness, nor did their mourning for the sins of their people work any effect. Bitterest of all, they had to congratulate wickedness in high places, and Jehovah Himself suffered It to go unpunished. Such things, says Malachi, spake they that feared God to each other  tempted thereto by the dogmatic form of their religion, and forgetful of all that Jeremiah and the Evangelist of the Exile had taught them of the value of righteous sufferings. Nor does Malachi remind them of this. His message is that the Lord remembers them, has their names written before Him, and when the day of His action comes they shall be separated from the wicked and spared. This is simply to transfer the fulfillment of the promise of Deuteronomy to the future and to another dispensation. Prophecy still works within the Law.’ (G.A. Smith)