Thou shalt be free from fear, because thy great and settled prosperity shall banish out of thy mind all those sad and irksome thoughts of thy former calamities, which naturally engender fears of the continuance or return of them. Persons blessed with eminent deliverances, and a happy settlement, are frequently said in Scripture to forget their former sorrows, as Genesis 41:51 Isaiah 54:4 1 Thessalonians 16:21; not that they simply forget them, but because they have no sad or frightful remembrance of them; for remembering and forgetting in Scripture do not simply note acts of the mind, but also affections and practices suitable to them, as is well known. Remember it as waters that pass away; thou shalt remember them no more than men remember either a land-flood, 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.
Related Commentaries of Job 11:16
Job 11:16
16 Because thou shalt forget thy misery, and remember it as waters that pass away: