Charles H. Spurgeon on Psalms 148:7

Praise the LORD from the earth. The song descends to our abode, and so comes nearer home to us. We who are "bodies terrestrial", are to pour out our portion of praise from the golden globe of this favoured planet. Jehovah is to be praised not only in the earth but from the earth, as if the adoration ran over from this planet into the general accumulation of worship. In Ps 148:1 the song was "from the heavens"; here it is "from the earth": songs coming down from heaven are to blend with those going up from earth. The "earth" here meant is our entire globe of land and water: it is to be made vocal everywhere with praise. Ye dragons, and all deeps. It would be idle to inquire what special sea monsters are here meant; but we believe all of them are intended, and the places where they abide are indicated by "all deeps." Terrible beasts or fishes, whether they roam the earth or swim the seas, are bidden to the feast of praise. Whether they float amid the teeming waves of the tropics, or wend their way among the floes and bergs of polar waters, they are commanded by our sacred poet to yield their tribute to the creating Jehovah. They pay no service to man; let them the more heartily confess their allegiance to the Lord. About "dragons" and "deeps" there is somewhat of dread, but this may the more fitly become the bass of the music of the Psalm. If there be aught grim in mythology, or fantastic in heraldry, let it praise the incomprehensible Lord.