Let not their sin be blotted out - These are the most terrible imprecations; but probably we should understand them as declaratory, for the same form of the verb, in the Hebrew, is used as precative and imperative. Turn their reproach - Their reproach shall be turned. Give them for a prey - They shall be given for a prey. Cover not their iniquity - Their iniquity shall not be covered. Let not their sin be blotted out - Their sin shall not be blotted out. All who know the genius of the Hebrew language, know that the future tense is used to express all these senses. Besides, we may rest assured that Nehemiah's curses, or declaration of God's judgments, had respect only to their bodies, and to their life: not to their souls and the world to come. And then they amount to no more than this: What a man soweth that he shall reap.

And cover not their iniquity, and let not their sin be blotted out from before thee,.... Let it not go unpunished, and even let it not be pardoned; which is spoken, not from a private spirit of revenge, but from a public spirit for the glory of God, and his justice; and not as a mere imprecation, but as a prophecy of what would be the case, in like manner as many of David's petitions in the Psalms; and for this there was a good foundation, since God had threatened the Moabites and Ammonites with utter destruction:

for they have provoked thee to anger before the builders; by despising his people, and mocking at the work the Lord had called them to; and this they did publicly, and on purpose to discourage the workmen.

And cover not their {e} iniquity, and let not their sin be blotted out from before thee: for they have provoked thee to anger before the builders.

(e) Let the plagues declare to the world that they set themselves against you and your Church: that he prays only having respect for God's glory and not for any private affection, or grudge.

4:5 Cover not - Let their wickedness be in thy sight, so as to bring down judgments upon them, that either they may be reformed, or others may be warned by their example. God is said to cover or hide sin when he forbears to punish it. Provoked thee - They have not only provoked us builders, but thee also.

4:1-6 Many a good work has been looked upon with contempt by proud and haughty scorners. Those who disagree in almost every thing, will unite in persecution. Nehemiah did not answer these fools according to their folly, but looked up to God by prayer. God's people have often been a despised people, but he hears all the slights that are put upon them, and it is their comfort that he does so. Nehemiah had reason to think that the hearts of those sinners were desperately hardened, else he would not have prayed that their sins might never be blotted out. Good work goes on well, when people have a mind to it. The reproaches of enemies should quicken us to our duty, not drive us from it.