1. …This Psalm is entitled, “A Psalm of David’s, when his land was restored.” Let us refer the whole to Christ, if we wish to keep the road of a right understanding: let us not depart from the corner stone, lest our understanding suffer a fall: in Him let that become fixed, which wavered with unstable motion; let that rest upon Him, which before was waving to and fro in uncertainty. Whatever doubt a man hath in his mind when he heareth the Scriptures of God, let him not depart from Christ; when Christ hath been revealed to him in the words, let him then be assured that he hath understood; but before he arriveth at the understanding of Christ, let him not presume that he hath understood. “For Christ is the end of the law for righteousness to every one that believeth.” What doth this mean, and how are these words understood in Christ, “When his land was restored”?…

2. The earth restored is the resurrection of the flesh; for after His resurrection, all those things which are sung of in the Psalm were done. Let us then hear a Psalm full of joy on the restoration of the Earth. Let the Lord our God excite in us a hope and a pleasure worthy of so great a thing; may He rule our discourse, that it be fit for your hearts, that whatever joy our heart doth feel in such sights, He may bring on to our tongue, and thence conduct it into your ears, then to your heart, thence to your actions.

Nicene and Post-Nicene Fathers: Series I/Volume VIII/Expositions on the Book of Psalms/Psalm XCVII

3. …“The Lord is King, let the earth be glad: yea, let the multitude of the isles be joyous” (ver. 1). It is so indeed, because the word of God hath been preached not in the continent alone, but also in those isles which lie in mid sea: even these are full of Christians, full of the servants of God. For the sea doth not retard Him who made it. Where ships can approach, cannot the words of God? The isles are filled. But figuratively the isles may be taken for all the Churches. Why isles? Because the waves of all temptations roar around them. But as an isle may be beaten by the waves which on every side dash around it, yet cannot be broken, and rather itself doth break the advancing waves, than by them is broken: so also the Churches of God, springing up throughout the world, have suffered the persecutions of the ungodly, who roar around them on every side; and behold the isles stand fixed, and at last the sea is calmed.

Nicene and Post-Nicene Fathers: Series I/Volume VIII/Expositions on the Book of Psalms/Psalm XCVII

4. “Clouds and darkness are round about Him: righteousness and judgment are the direction of His seat” (ver. 2).…The Lord Himself saith: “For judgment I am come into this world; that they which see not might see, and that they which see might be made blind.” They who seem unto themselves to see, who think themselves wise, who think healing not needful for them, that they may be made blind, may not understand. And that “they which see not may see;” that they who confess their blindness may obtain to be enlightened. Let there be therefore “clouds and darkness round about Him,” for those who have not understood Him: for those who confess and humble themselves, “righteousness and judgment are the direction of His seat.” He called those who believe in Him His seat: for from them hath He made Himself a seat, since in them Wisdom sitteth; for the Son of God is the Wisdom of God. But we have heard from another passage of Scripture a strong confirmation of this interpretation. “The soul of the righteous is the seat of Wisdom.” Because then they who have believed in Him have been made righteous: justified by faith, they have become His own seat: He sitteth in them, judging from them, and guiding them.…

Nicene and Post-Nicene Fathers: Series I/Volume VIII/Expositions on the Book of Psalms/Psalm XCVII