2. The universal joy which the deliverance of God's people should bring along with it (v. 23): Sing, O you heavens! This intimates, (1.) That the whole creation shall have cause for joy and rejoicing in the redemption of God's people; to that it is owing that it subsists (that it is rescued from the curse which the sin of man brought upon the ground) and that it is again put into a capacity of answering the ends of its being, and is assured that though now it groans, being burdened, it shall at last be delivered from the bondage of corruption. The greatest establishment of the world is the kingdom of God in it, Ps. xcvi. 11-13; xcviii. 7-9. (2.) That the angels shall rejoice in it, and the inhabitants of the upper world. The heavens shall sing, for the Lord has done it. And there is joy in heaven when God and man are reconciled (Luke xv. 7), joy when Babylon falls, Rev. xviii. 20. (3.) That those who lay at the greatest distance, even the inhabitants of the Gentile world, should join in these praises, as sharing in these joys. The lower parts of the earth, the forest and the trees there, shall bring in the tribute of thanksgiving for the redemption of Israel.