Albert Barnes Commentary Psalms 111:4

"He hath made his wonderful works to be remembered: Jehovah is gracious and merciful." — Psalms 111:4 (ASV)

He hath made his wonderful works – in heaven and in earth.

To be remembered – literally, “Memory has he made for his wonderful works.” “They” are so made that man may remember them; the memory of man, also, is so made that it may retain them. The highest and most appropriate exercise of memory is to retain the lessons which the works of God inculcate; to treasure up for gratitude and for use what he teaches his intelligent creation through those works. Memory can never be better employed than in treasuring up the truths which the Creator teaches in his providential dealings with us, and in his word. How much better would it be for man if he labored more to “remember” these things; if he sought to forget many of those things which he is so careful now to retain in his recollection.

The Lord is gracious ... – See the notes at (Psalms 86:5). This is stated here as the result of the careful study of the doings of God; as the conclusion to which all will come who carefully study his works. “Illustrations” of what God has done that deserves to be remembered occupy the remainder of the psalm, except the last verse.