The psalmist concludes this meditation with speaking,

I.Praise to God, which is chiefly intended in the psalm.

1.He is to be praised, (1.) As a great God, and a God of matchless perfection: The glory of the Lord shall endure for ever, Psa 104:31. It shall endure to the end of time in his works of creation and providence; it shall endure to eternity in the felicity and adorations of saints and angels. Man's glory is fading; God's glory is everlasting. Creatures change, but with the Creator there is no variableness. (2.) As a gracious God: The Lord shall rejoice in his works. He continues that complacency in the products of his own wisdom and goodness which he had when he saw every thing that he had made, and behold it was very good, and rested the seventh day. We often do that which, upon the review, we cannot rejoice in, but are displeased at, and wish undone again, blaming our own management. But God always rejoices in his works, because they are all done in wisdom. We regret our bounty and beneficence, but God never does; he rejoices in the works of his grace: his gifts and callings are without repentance. (3.) As a God of almighty power (Psa 104:32): He looks on the earth, and it trembles, as unable to bear his frowns - trembles, as Sinai did, at the presence of the Lord. He touches the hills, and they smoke. The volcanoes, or burning mountains, such as Aetna, are emblems of the power of God's wrath fastening upon proud unhumbled sinners. If an angry look and a touch have such effects, what will the weight of his heavy hand do and the operations of his outstretched arm? Who knows the power of his anger? Who then dares set it at defiance? God rejoices in his works because they are all so observant of him; and he will in like manner take pleasure in those that fear him and that tremble at his word.

2.The psalmist will himself be much in praising him (Psa 104:33): "I will sing unto the Lord, unto my God, will praise him as Jehovah, the Creator, and as my God, a God in covenant with me, and this not now only, but as long as I live, and while I have my being." Because we have our being from God, and depend upon him for the support and continuance of it, as long as we live and have our being we must continue to praise God; and when we have no life, no being, on earth, we hope to have a better life and better being in a better world and there to be doing this work in a better manner and in better company.

II.Joy to himself (Psa 104:34): My meditation of him shall be sweet; it shall be fixed and close; it shall be affecting and influencing; and therefore it shall be sweet. Thoughts of God will then be most pleasing, when they are most powerful. Note, Divine meditation is a very sweet duty to all that are sanctified: "I will be glad in the Lord; it shall be a pleasure to me to praise him; I will be glad of all opportunities to set forth his glory; and I will rejoice in the Lord always and in him only." All my joys shall centre in him, and in him they shall be full.

III.Terror to the wicked (Psa 104:35): Let the sinners be consumed out of the earth; and let the wicked be no more. 1. Those that oppose the God of power, and fight against him, will certainly be consumed; none can prosper that harden themselves against the Almighty. 2. Those that rebel against the light of such convincing evidence of God's being, and refuse to serve him whom all the creatures serve, will justly be consumed. Those that make that earth to groan under the burden of their impieties which God thus fills with his riches deserve to be consumed out of it, and that it should spue them out. 3. Those that heartily desire to praise God themselves cannot but have a holy indignation at those that blaspheme and dishonour him, and a holy satisfaction in the prospect of their destruction and the honour that God will get to himself upon them. Even this ought to be the matter of their praise: "While sinners are consumed out of the earth, let my soul bless the Lord that I am not cast away with the workers of iniquity, but distinguished from them by the special grace of God. When the wicked are no more I hope to be praising God world without end; and therefore, Praise you the Lord; let all about me join with me in praising God. Hallelujah; sing praise to Jehovah." This is the first time that we meet with Hallelujah; and it comes in here upon occasion of the destruction of the wicked; and the last time we meet with it is upon a similar occasion. When the New Testament Babylon is consumed, this is the burden of the song, Hallelujah, Rev 19:1, Rev 19:3, Rev 19:4, Rev 19:6.

He looketh on the earth, and it trembleth,.... As Sinai did when he descended on it, Psa 68:8, to which the allusion seems to be; and a look from him, a severe one, a frowning one, will make the inhabitants of the earth to tremble; a providential look, sending famine, pestilence or the sword among them. A displeased look will make the hearts of his own children tremble, as no doubt Peter's did, when the Lord looked upon him, and he remembered his word; and if a look, much more a word, an awful word, as his voice in the law, pronouncing such cursed as keep it not; and especially the tremendous sentence he will pronounce on the wicked at the last day,

go, ye cursed, &c. and if a look and a word are so terrible, what will be the lighting down of his arm, with the indignation of his anger upon those who have refused to give him glory? For the words seem to carry in them a reason why he should be glorified, taken from the consequence of not glorifying him, who has such a majesty in his looks, such a terror in his countenance, and such power in his hands.

He toucheth the hills, and they smoke; as Sinai likewise did, when he was upon it, Exo 19:18, and as other hills do, when touched with lightning; the tops of mountains, the higher they are, the sooner and the more they smoke (u). God, with a touch of his hand, can set mountains on fire, open "volcanos", and cause them to burn for years together; as Etna, Vesuvius, Hecla, and others: and how easily can he set on fire the course of nature, burn the world, and all that is in it! It is but touching it, and it takes fire immediately: this he can as easily do as a man can light a torch or a candle; and as easily can he destroy sinners with the fire of his wrath, or cast them into everlasting fire, with the devil and his angels, which will burn to the lowest hell; and what are hills and mountains, or the greatest personages on earth, if he does but touch them, or lay his hand upon them in wrath? They are crushed as the moth; they are nothing before our great Zerubbabel.

(u) "Montis vicina cacumina coelo----Tanto "magis edita fumant", Lucret. de Rerum Natura, l. 6. v. 458, 459.