This picture was not lost to Israel. The "tree of life," became a common poetic simile to represent that which may be a source of great blessing. In the Book of Pr the conception deepens from a physical source of a mere physical immortality to a moral and spiritual source of a full life, mental moral and spiritual, which will potentially last forever. Life, long life, is here attributed to a certain possession or quality of mind and heart. Wisdom is a source and supply of life to man. This wisdom is essentially of a moral quality, and this moral force brings the whole man into right relations with the source of life. Hence, a man truly lives by reason of this relationship (
Pr 3:18). The allusion in this verse is doubtless to
Ge 2:9;
3:22. An expression very similar is
Pr 10:11,
where the mouth of the righteous is declared to be a fountain of life. Good words are a power for good, and hence, produce good living.
Pr 11:30 has a like thought: "The fruit of the righteous is a tree of life," i.e. the good life is a source of good in its influence on others.
Pr 13:12 says: "Hope deferred maketh the heart sick; but when the desire cometh, it is a tree of life." The meaning seems to be that the gratification of good and lawful desires produces those pleasures and activities which make up life and its blessings.
Pr 15:4 says: "A gentle tongue is a tree of life," i.e. its beneficent influences help others to a better life.