Cont. Study:

8. Two great truths he here builds his confidence upon and fetches comfort from. (1.) That salvation belongeth unto the Lord; he has power to save, be the danger ever so great; it is his prerogative to save, when all other helps and succours fail; it is his pleasure, it is his property, it is his promise to those that are his, whose salvation is not of themselves, but of the Lord. Therefore all that have the Lord for their God, according to the tenour of the new covenant, are sure of salvation; for he that is their God is the God of salvation. (2.) That his blessing is upon his people; he not only has power to save them, but he has assured them of his kind and gracious intentions towards them. He has, in his word, pronounced a blessing upon his people; and we are bound to believe that that blessing does accordingly rest upon them, though there be not the visible effects of it. Hence we may conclude that God’s people, though they may lie under the reproaches and censures of men, are surely blessed of him, who blesses indeed, and therefore can command a blessing. In singing this, and praying it over, we must own the satisfaction we have had in depending upon God and committing ourselves to him, and encourage ourselves, and one another to continue still hoping and quietly waiting for the salvation of the Lord.