1.

...Behold the Psalm soundeth; it is the voice of some one (and that some one are ye, if ye will), of some one encouraging his soul to praise God, and saying to himself, "Praise the Lord, O my soul" (ver. 1). For sometimes in the tribulations and temptations of this present life, whether we will or no, our soul is troubled; of which troubling he speaketh in another Psalm. ¹ But to remove this troubling, he suggesteth joy; not as yet in reality, but in hope; and saith to it when troubled and anxious, sad and sorrowing, "Hope in God, for I will yet confess to Him."...