Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith the LORD of hosts.
I — The Messiah.
My messenger — John the Baptist.
The Lord — The Messiah.
Whom ye seek — Whom ye, who truly fear God, long and wait for.
Suddenly come — After the coming of his fore-runner.
To his temple — That which was the second temple at Jerusalem, lately built by Zerubbabel and Joshua.
The messenger — The angel of the covenant, the Messiah, in whose blood the covenant between God and man was confirmed.
Whom ye delight in — You Jews, among whom, few there are, who do not please themselves to think of his coming, tho' from various motives.
 But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap:
Abide — Who shall be able to stand under the weight of those crosses which in that day, will fall on all sorts of men? The day - This day was from his preaching, 'till the utter destruction of Jerusalem, about seventy years after the birth of Christ.
A refiner's fire — Some are like metals, which nothing but a fierce fire can purge, such fire shall the troubles of these days be.
Fuller's soap — As boiling waters, into which, spotted cloaths are thrown, and as the rubbing of them with soap; so that day will prove to all, a day of great trial, to purge and refine.
 And he shall sit as a refiner and purifier of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness.
He shall fit — As resolved to attend his work and finish it.
He shall purify — The effect of this fiery trial, shall be the thorough cleansing of the persons that are to pass through it.
Sons of Levi — Either the Jewish Levites, or all Christians, who are made priests unto God.
In righteousness — That they may offer themselves, their souls and bodies to God, in righteousness and true holiness.
 Then shall the offering of Judah and Jerusalem be pleasant unto the LORD, as in the days of old, and as in former years.
The offerings — The services and duties of the whole Christian church.
Pleasant — Well pleasing to him.
 And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the LORD of hosts.
I will come near — You have spoken as if you thought I was far off, but you shall see I am near.
To you — O Jews, not those very persons Malachi preached to, but those who were living when the Messiah came.
 For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.
I change not — I have an unchangeable hatred to sin: and my long suffering also changeth not, therefore you are not consumed in your sins.
Not consumed — God is the same in his wisdom to order the rewards of good and bad in the fittest season, therefore neither the one nor the other are consumed, but preserved to the season appointed of God.
 Even from the days of your fathers ye are gone away from mine ordinances, and have not kept them. Return unto me, and I will return unto you, saith the LORD of hosts. But ye said, Wherein shall we return?
From mine ordinances — Which either directed my worship, or your dealings one with another.
 Ye are cursed with a curse: for ye have robbed me, even this whole nation.
Cursed with a curse — Are greatly cursed.
 Bring ye all the tithes into the storehouse, that there may be meat in mine house, and prove me now herewith, saith the LORD of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.
Bring ye — Make a punctual and full payment of all tithes; about this did Nehemiah contend with the rulers, and made them comply, and then all Judah obeyed and did the like, Nehemiah 13:10-13.
To the store-house — This was one or more large rooms, built on purpose for this use.
That there may be meat — For the priests and Levites to live upon.
Prove me — Make the experiment.
The windows of heaven — A kind of proverbial speech, to express great abundance.
A blessing — First of rain to water the earth, next a blessing of corn, wine and oil, and all other products of the earth.
 And I will rebuke the devourer for your sakes, and he shall not destroy the fruits of your ground; neither shall your vine cast her fruit before the time in the field, saith the LORD of hosts.
The devourer — All kind of devourers, the locusts, the canker-worm, and the caterpillar, which though they are in incredible multitudes, yet a rebuke from God will check them all at once, as if they were but one.
For your sakes — For your good.
Your vine — Your vine shall carry their fruit 'till they are fully ripe.
 And all nations shall call you blessed: for ye shall be a delightsome land, saith the LORD of hosts.
All nations — All that are about you.
A delightsome land — The revival of religion in a land, will make it delight-some, both to God, and to all good men.
 And now we call the proud happy; yea, they that work wickedness are set up; yea, they that tempt God are even delivered.
And now — You say, we see before our eyes, that the proud contemners of God and his law, are the flourishing ones.
Delivered — Escape all punishment.
 Then they that feared the LORD spake often one to another: and the LORD hearkened, and heard it, and a book of remembrance was written before him for them that feared the LORD, and that thought upon his name.
Then — When contempt of God was grown so high.
That feared the Lord — Those that were truly religious.
Spake often — Conversed together the more frequently.
And a book — All this is spoken after the manner of men.
For them — On their behalf.
 And they shall be mine, saith the LORD of hosts, in that day when I make up my jewels; and I will spare them, as a man spareth his own son that serveth him.
Make up my jewels — This shall be fully made good in the last great day, and in heaven to eternal ages.
I will spare them — In the mean time they shall be spared, pitied, preserved, and loved.
 Then shall ye return, and discern between the righteous and the wicked, between him that serveth God and him that serveth him not.
Ye — Ye contemners of God and religion, return to your reason, forced by the convincing power of God's judgments.
Discern — Clearly see the happiness of the righteous, and your own misery, who perish in your wickedness.