The way of life is above to the wise; Revised Version, to the wise the way of life goeth upward. The writer means primarily that the wise and good lead such a life as to preserve them from death (Proverbs 14:32).
The path may be steep and painful, but at any rate it has this compensation—it leads away from destruction. It is obvious to read into the passage higher teaching. The good man's path leads heavenward, to a high life here, to happiness hereafter; his conversation is in heaven (Philippians 3:20), his affections are set on things above (Colossians 3:2).
Such an upward life tends to material and spiritual health, as it is added, that he may depart from hell (SheoI) beneath. Primarily, a long and happy life is promised to the man who fears the Lord, as in Proverbs 3:16; secondarily, such a one avoids that downward course which ends in the darkness of hell.
Vulgate, "The path of life is above the instructed man, to make him avoid the nethermost (novissimo) hell;" Septuagint, "The thoughts of the prudent man are the ways of life, that turning from Hades he may be safe."