Proverbs 10:11 uses the exact same 'fountain of life' metaphor for the righteous mouth—reinforcing understanding as a source of life.

Proverbs 13:14 also calls the law of the wise a 'fountain of life'—parallel imagery and concept of life-giving wisdom.

Proverbs 14:27 identifies the fear of the Lord as a 'fountain of life'—same metaphor, different source, but shared theme.

Proverbs 12:16 contrasts the prudent ignoring insults with the fool's vexation, mirroring the fountain of life vs folly contrast in 16:22.

In Proverbs 15:2, the wise tongue commends knowledge while fools pour out folly — similar contrast to understanding vs folly's punishment.

Proverbs 18:4 uses water imagery (deep waters, flowing brook) for wise speech—parallel to understanding as a fountain of life.

In John 6:63, Jesus identifies the Spirit and his words as the source of life, echoing the proverb's 'fountain of life' from understanding.

In John 6:68, Peter affirms Jesus has the words of eternal life — a parallel to understanding as a fountain of life.