How beautifully does the psalm begin, in calling upon the soul to this most pleasing service, of praising God! Reader, do remark it, that it is with the heart man believeth unto righteousness; while with the mouth, confession is made unto salvation. Unless the heart be engaged in any service, there is nothing truly valuable in that service. Hence it was an ancient custom in the church, at the opening of the service, to call upon the people, Lift up your hearts! Romans 10:10.
Related Commentaries of Psalms 103:1
Psalms 103:1-2
1 Bless the LORD, O my soul: and all that is within me, bless his holy name.
2 Bless the LORD, O my soul, and forget not all his benefits: