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.In what place therefore ye hear the sound of the trumpet,.... Be it what part of the wall soever they were at work, even the most distant:

resort ye thither to us; to Nehemiah, and the half of his servants armed, where the trumpet was blown; that was to be the place of rendezvous:

our God shall fight for us; and give us victory over our enemies; none have any reason to be intimidated, when they shall hear the sound of the trumpet.