Matthew Poole and continuators on Job 11:16

16. Because thou shalt forget thy misery , and remember it as waters that pass away :

Thou shalt be free from fear, because thy great and settled prosperity shall banish out of thy mind all those sad and irksom thoughts of thy former Calamities which naturally ingender fears of the continuance or return of them. Persons blessed with eminent Deliverances and an happy settlement, are frequently said in Scripture to forget their former sorrows; as Gen. 41. 51. Isa. 54. 4. Iohn 16. 21. not that they simply forget them, but because they have no sad or frightful remembrance of them: For remembring and forgetting in Scripture, do not simply note acts of the mind, but also affections and practises suitable to them, as is well known.

Thou shalt remember them no more, than men remember either a Land-stood▪ which as it comes so it goes away suddenly, and leaves few or no footsteps or memorials behind it, or the waters of a River, which as soon as they are out of sight, are out of mind, because of the new waters which immediately come in their stead.