Charles H. Spurgeon on Psalms 150:6

Let all breath praise Jah! Hallelujah. The very ambiguity of "all breath" gives extraordinary richness of meaning to this closing sentence. From the simple idea of wind instruments, mentioned in the context, it leads us, by a beautiful transition, to that of vocal, articulate, intelligent praise, uttered by the breath of living men, as distinguished from mere lifeless instruments. Then, lastly, by a natural association, we ascend to the idea expressed in the common version, "everything that hath breath", not merely all that lives, but all that has a voice to praise God. There is nothing in the Psalter more majestic or more beautiful than this brief but most significant finale, in which solemnity of tone predominates, without however in the least disturbing the exhilaration which the close of the Psalter seems intended to produce; as if in emblematical allusion to the triumph which awaits the church and all its members, when through much tribulation they shall enter into rest. —Joseph Addison Alexander.