Blessed be the name of Jehovah The prophet confirms what I stated above, that the praises of God must be continued throughout the whole course of our life. If his name is to be continually praised, it ought, at least, to be our earnest endeavor, during our brief pilgrimage here, that the remembrance of it may flourish after we are dead. In the next verse, he extends the glory of God's name to all parts of the earth; wherefore our apathy will be totally inexcusable, if we do not make its praises resound among ourselves. Under the law, God could not be praised aright, excepting in Judea by his own people, to whom the knowledge of him was confined. His works, however, which are visible to all nations, are worthy of the admiration of the whole world. To the same effect is the following clause respecting the loftiness of God's glory; for can there be any thing more base, than for us to magnify it but seldom and tardily, considering it ought to fill our thoughts with enrapturing admiration? In extolling the name of God so highly, the prophet intends to show us that there is no ground for indifference; that silence would savor of impiety were we not to exert ourselves to the utmost of our ability to celebrate his praises, in order that our affections may, as it were, rise above the heavens. When he adds, that God is high above all nations, there is an implied reproach, by which he fastens upon the chosen people the charge of apathy in the exercise of praise. For can there be any thing more preposterous, than for those who are eye-witnesses of God's glory, which shines forth even among the blind, to refrain from making it the theme of their praises? At the very time when God conferred upon the Jews the exclusive honor of being the depositaries of the knowledge of his heavenly doctrine, he was nevertheless, according to Paul, not without a witness, (Acts 14:17; Romans 1:20) After the promulgation of the Gospel, his exaltation above the nations was more evident, for then the whole world was placed under his sway.

Blessed be the name of the Lord - Blessed be the Lord; or; Let the name of the Lord be blessed.
From this time forth and for evermore - Now and forever. He is worthy of praise now, and he ever will be. What he is now, he will always continue to be; and as praise is proper now, it will be forever and ever. An eternal God has claims to eternal praise.

Blessed be the name of the Lord,.... Some prefix the word "saying", as directing to the matter and manner of praising the Lord, and to express themselves thus; "let the name of the Lord be blessed"; honoured, glorified, spoken well of.
From this time forth and for evermore; from the beginning of time, or as soon as time began, the Lord's name was to be praised, and was praised by the holy angels, who were present at laying the foundation of the earth, Job 38:4, and all the works of the Lord, in their way, have praised him ever since. Here it may respect the time of penning this psalm, or the time when the persons called upon commenced the servants of the Lord, the time of their conversion; a time of love, life, light, and deliverance, and therefore a time to begin to praise the Lord: or the whole time of the Gospel dispensation, to which this psalm refers; the accepted time and day of salvation, and of the Gentiles glorifying God for his mercy; in which the Lord is to be and is praised, as he will be to all eternity, by angels and glorified saints.