Proverbs 16:23 also links heart and lips — the wise heart instructs the mouth, deepening the 'keep in heart and on lips' concept.

Proverbs 2:10 echoes the pleasantness of wisdom entering the heart, mirroring the internal keeping and delight in 22:18.

Jeremiah 15:16 describes eating God's words with joy and delight, directly mirroring the pleasant internal keeping of wisdom in 22:18.

Luke 6:45 directly states the heart's content flows to the mouth — exactly the principle behind keeping wisdom on lips.

Matthew 13:52 uses treasure analogy: a teacher brings out old and new from his store — mirroring having wisdom ready on lips from a stored heart.

Ecclesiastes 10:12 contrasts wise and foolish speech, echoing that words from the wise are gracious — supporting the value of ready lips.

Colossians 4:6 calls for gracious, seasoned conversation — similar call to speak wisely, though with grace rather than stored truth.