Let them give glory to Jehovah. He explains what the nature of that shouting will be, that is, to celebrate the praises of God; for his goodness and mercy shall be everywhere seen; and therefore he enjoins them to celebrate this redemption with a cheerful voice, because the blessed consequences of it shall be shared by all the nations. And thus we are reminded to cry aloud in the present day with the greatest earnestness when we proclaim the praises of God, that we ourselves may be inflamed, and may excite others by our example to act in the same manner; for to be lukewarm, or to mutter, or to sing, as the saying is, to themselves and to the muses, is impossible for those who have actually tasted the grace of God.

Let them give glory in the islands - (see the note at Isaiah 41:1). Let the distant regions praise God.

Let them give glory unto the Lord,.... For all the great and good things he has done for them, in sending his Gospel to them, calling them by his grace, enlightening their minds, and revealing his Son in them, and making them partakers of the blessings of his grace, and entitling them to eternal glory and happiness:
and declare his praise in the islands; as on the western continent, and the isles of it; so on the eastern continent, and the islands of it, the islands of Greece, the islands in the Aegean sea.

glory . . . islands-- (Isaiah 24:15).

The islands - In the remotest parts of the world, as well as in Arabia, which was near to them.