Albert Barnes Commentary Psalms 146:2

"While I live will I praise Jehovah: I will sing praises unto my God while I have any being." — Psalms 146:2 (ASV)

While I live will I praise the Lord ... - See the notes at Psalms 104:33, where the same language occurs substantially as in this verse: I will sing unto the Lord as long as I live; I will sing praise to my God while I have my being. The idea is not merely that he would praise Him during this life—short and fleeting as it is—but that as long as he had an existence, in the future world, forever he would praise Him.

Through every period of my life
Your goodness I’ll pursue;
And after death, in distant worlds,
The glorious theme renew.
Through all eternity to You
A joyful song I’ll raise;
But, oh! eternity’s too short
To utter all Your praise.”

- Addison