Albert Barnes Commentary Psalms 145:2

"Every day will I bless thee; And I will praise thy name for ever and ever." — Psalms 145:2 (ASV)

Every day will I bless thee ... - Compare Psalms 92:2; Psalms 55:17. As we receive blessings from God every day , it is proper that we should render to him daily thanks; as God is the same always—yesterday, today, and forever—it is proper that he should receive from day to day the tribute of praise; as we are daily dependent on him—one day as much as another—our recognition of that dependence should be daily; and as he will always be unchangeably the same, it will be proper that he should be praised forever and ever. Two things are apparent from this verse:

1. that a truly religious man will worship God every day;
2. that it is the fixed purpose of a truly religious man to continue this forever.