Proverbs 3:18

“There be three [things which] are too wonderful for me, etc.] Which were above his reach and comprehension; what he could not find out, nor account for, nor sufficiently admire; yea, four things which I know not; the way of them; as follows.”

“Wisdom allegorized as a tree of life-- (Gen 2:9; Gen 3:22) whose fruit preserves life, gives all that makes living a blessing.”

“This and the other references in Proverbs Proverbs 11:30; Proverbs 13:12; Proverbs 15:4 are the only allusions in any book of the Old Testament, after Genesis, to the “tree” itself, or to its spiritual significance. Further, there is the tendency to a half-allegorizing application of that history. “The tree of life” which Adam was not to taste lies open to his children. Wisdom is the “tree of life,” giving a true immortality. The symbol entered largely into the religious imagery. of Assyria, Egypt, and Persia. Philo, going a step further, found in the two trees the ideal representatives of speculative knowledge and moral wisdom; and the same image subserves a higher purpose in the promises…”

“A tree - A pledge of everlasting life. He alludes to the tree of life, and intimates, that this is the only restorer of that life which we have lost by sin. Proverbs 3:19”

“3:18 The tree of life alludes to the original tree in the Garden of Eden (Gen 2:9).”

“Pro 11:30, Pro 13:12; Gen 2:9, Gen 3:22; Rev 22:2 Proverbs 3:19”