Charles H. Spurgeon on Psalms 111:2

Great. The word lwdg (gadol) great, has in the Hebrew so extensive a range of meaning, that in the English there is no single substitute expressive enough to take its place. It denotes greatness and augmentation of various kinds. In this passage the works of Jehovah are described as greatly "magnified or augmented" in their influences and effects on the minds of men who behold them. The greatness ascribed to these works, is a greatness in number, in character, in dignity, in beauty, in variety, in riches. —Benjamin Weiss.

Verse 2, 4. Great...sought out. Remembered. The works of Jehovah surpass the reach of human discovery, but are yet searched and explored with delight by all the members of his church; for, if they are too great to be understood, they are also too great to be forgotten. —Edward Garrard Marsh.