Proverbs 11:30 also calls the fruit of the righteous a 'tree of life' — directly echoing the same metaphor for wisdom in Proverbs 3:18.

Proverbs 4:13 urges holding fast to instruction because 'she is your life' — directly reinforcing the life-giving value of wisdom in Proverbs 3:18.

Proverbs 15:4 uses the same 'tree of life' metaphor for gentle speech, applying wisdom's image to words.

Proverbs 10:17 also links heeding instruction to life, echoing the 'tree of life' as the path to life.

Proverbs 13:12 uses 'tree of life' for a fulfilled desire — a different application of the same metaphor found in Proverbs 3:18.

Genesis 2:9 introduces the literal tree of life in Eden — the source of the metaphor Proverbs 3:18 applies to wisdom.

Revelation 22:2 shows the tree of life in the New Jerusalem — fulfilling the life-giving imagery Proverbs 3:18 applies to wisdom.

Revelation 2:7 promises the tree of life in paradise, directly echoing the OT tree of life as a type of eternal blessing.

In Genesis 3:22, the tree of life is guarded after the fall — contrasting with Proverbs 3:18 where wisdom as the tree of life is freely available.

Ecclesiastes 7:12 says wisdom preserves life, similar to the tree of life that gives life to those who hold it.

Deuteronomy 32:47 calls God's word 'your life' — paralleling Proverbs 3:18's claim that wisdom is a tree of life.