1. Bless Jehovah, O my soul! The prophet, by stirring up himself to gratitude, gives by his own example a lesson to every man of the duty incumbent upon him. And doubtless our slothfulness in this matter has need of continual incitement. If even the prophet, who was inflamed with a more intense and fervent zeal than other men, was not free from this malady, of which his earnestness in stimulating himself is a plain confession, how much more necessary is it for us, who have abundant experience of our own torpor, to apply the same means for our quickening? The Holy Spirit, by his mouth, indirectly upbraids us on account of our not being more diligent in praising God, and at the same time points out the remedy, that every man may descend into himself and correct his own sluggishness. Not content with calling upon his soul (by which he unquestionably means the seat of the understanding and affections) to bless God, the prophet expressly adds his inward parts, addressing as it were his own mind and heart, and all the faculties of both. When he thus speaks to himself, it is as if, removed from the presence of men, he examined himself before God. The repetition renders his language still more emphatic, as if he thereby intended to reprove his own slothfulness.