John Gills Exposition of the Bible Commentary - Proverbs 16:22
Understanding is a wellspring of life unto him that hath it ,.... "The master" or "owner of it" F11 בעליו "domini sui", Pagninus; "domino suo", Mercerus, Gejerus; "dominorum suorum", Michaelis. . As he only is to whom an understanding is given; for, whatever understanding men may have of natural and civil things, they have none of things spiritual and divine, unless it be given them by Christ. This is no other than the grace of the Spirit of God, who is a spirit of wisdom and... read more
Matthew Henry's Complete Commentary - Proverbs 16:22
Note, 1. There is always some good to be gotten by a wise and good man: His understanding is a well-spring of life to him, which always flows and can never be drawn dry; he has something to say upon all occasions that is instructive, and of use to those that will make use of it, things new and old to bring out of his treasure; at least, his understanding is a spring of life to himself, yielding him abundant satisfaction; within his own thoughts he entertains and edifies himself, if not others.... read more