Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Neh 4:1-6) Opposition of Sanballat and others.
(Neh 4:7-15) The designs of the adversaries.
(Neh 4:16-23) Nehemiah's precautions.
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.
The hindering good work is what bad men aim at, and promise themselves success in; but good work is God's work, and it shall prosper. God has many ways of bringing to light, and so of bringing to nought, the devices and designs of his church's enemies. If our enemies cannot frighten us from duty, or deceive us into sin, they cannot hurt us. Nehemiah put himself and his cause under the Divine protection. It was the way of this good man, and should be our way. All his cares, all his griefs, all his fears, he spread before God. Before he used any means, he made his prayer to God. Having prayed, he set a watch against the enemy. If we think to secure ourselves by prayer, without watchfulness, we are slothful, and tempt God; if by watchfulness, without prayer, we are proud, and slight God: either way, we forfeit his protection. God's care of our safety, should engage and encourage us to go on with vigour in our duty. As soon as a danger is over, let us return to our work, and trust God another time.
We must watch always against spiritual enemies, and not expect that our warfare will be over till our work is ended. The word of God is the sword of the Spirit, which we ought to have always at hand, and never to have to seek for it, either in our labours, or in our conflicts, as Christians. Every true Christian is both a labourer and a soldier, working with one hand, and fighting with the other. Good work is likely to go on with success, when those who labour in it, make a business of it. And Satan fears to assault the watchful Christian; or, if attacked, the Lord fights for him. Thus must we wait to the close of life, never putting off our armour till our work and warfare are ended; then we shall be welcomed to the rest and joy of our Lord.