15 And when it came to the ears of those who were against us, that we had knowledge of their designs and that God had made their purpose come to nothing, we all went back to the wall, everyone to his work

16 And from that time, half of my servants were doing their part of the work, and half kept the spears and body-covers and the bows and the metal war-dresses; and the chiefs were at the back of the men of Judah. 17 Those who were building the wall and those who were moving material did their part, everyone working with one hand, with his spear in the other; 18 Every builder was working with his sword at his side. And by my side was a man for sounding the horn. 19 And I said to the great ones and the chiefs and the rest of the people, The work is great and widely spaced and we are far away from one another on the wall: 20 Wherever you may be when the horn is sounded, come here to us; our God will be fighting for us. 21 So we went on with the work: and half of them had spears in their hands from the dawn of the morning till the stars were seen. 22 And at the same time I said to the people, Let everyone with his servant come inside Jerusalem for the night, so that at night they may keep watch for us, and go on working by day. 23 So not one of us, I or my brothers or my servants or the watchmen who were with me, took off his clothing, everyone went armed to the water.

Matthew Henry's Commentary on Nehemiah 4:15-23

Commentary on Nehemiah 4:7-15

(Read Nehemiah 4:7-15)

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.

Commentary on Nehemiah 4:16-23

(Read Nehemiah 4:16-23)

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.