Albert Barnes Commentary Psalms 145:3

"Great is Jehovah, and greatly to be praised; And his greatness is unsearchable." — Psalms 145:3 (ASV)

Great is the Lord, and greatly to be praised - See (Psalms 96:4), note; (Psalms 18:3), note.

And his greatness is unsearchable - See (Job 5:9), note; (Job 9:10), note; (Job 11:7–8), notes.