II. The great devotion of this remnant, which is the greater for their having so narrowly escaped this great destruction (v. 14): They shall lift up their voice; they shall sing. 1. They shall sing for joy in their deliverance. When the mirth of carnal worldlings ceases the joy of the saints is as lively as ever; when the merry-hearted do sigh because the vine languishes the upright-hearted do sing because the covenant of grace, the fountain of their comforts and the foundation of their hopes, never fails. Those that rejoice in the Lord can rejoice in tribulation, and by faith may be in triumphs when all about them are in tears. 2. They shall sing to the glory and praise of God, shall sing not only for the mercy but for the majesty of the Lord. Their songs are awful and serious, and in their spiritual joys they have a reverend regard to the greatness of God, and keep at a humble distance when they attend him with their praises. The majesty of the Lord, which is matter of terror to wicked people, furnishes the saints with songs of praise. They shall sing for the magnificence, or transcendent excellency, of the Lord, shown both in his judgments and in his mercies; for we must sing, and sing unto him, of both, Ps. ci. 1. Those who have made, or are making, their escape from the land (that being emptied and made desolate) to the sea and the isles of the sea, shall thence cry aloud; their dispersion shall help to spread the knowledge of God, and they shall make even remote shores to ring with his praises. It is much for the honour of God if those who fear him rejoice in him, and praise him, even in the most melancholy times.