Proverbs 16:23 says the wise heart teaches the mouth, directly echoing the connection between inner wisdom and persuasive speech found here.

Proverbs 16:24 directly parallels 'sweetness of speech' with pleasant words like honey — a near-identical image about gracious speech.

Proverbs 10:8 also calls the 'wise in heart' obedient, linking heart wisdom to receiving instruction — a similar theme of wise disposition.

Proverbs 20:15 calls lips of knowledge a precious jewel — valuing wise speech as highly as the main verse values sweetness of lips.

Proverbs 27:9 compares sweet counsel to ointment — expanding how pleasant speech brings joy, just as sweetness of lips increases learning.

Colossians 4:6 calls for speech always with grace—matching the idea of gracious, persuasive words that increase learning.

Ephesians 4:29 commands speech that edifies and imparts grace—directly parallel to sweetness of lips that increases learning.

In Ecclesiastes 10:12, the same contrast appears: wise words are gracious, fool's lips destroy—reinforcing the power of sweet speech.

1 Kings 3:12 shows God giving Solomon a wise and understanding heart — a concrete example of the wise heart praised here.

Luke 4:22 records people amazed at Jesus' gracious words — a NT fulfillment of the ideal of sweet lips increasing learning.

Isaiah 50:4 has the tongue of the learned to speak a timely word — showing God-given ability for sweet, instructive speech.

In Matthew 12:35, Jesus teaches that the heart's treasure produces speech—echoing how a wise heart yields sweet lips that increase learning.

James 3:17 describes wisdom from above as peaceable and gentle, echoing the theme of wise speech but with a fuller list of virtues.

Ecclesiastes 12:10 shows the preacher seeking acceptable words — the deliberate pursuit of sweet, effective speech that teaches.

Psalm 45:2 describes grace poured into lips — a royal example of the same concept of sweet speech being blessed.

Job 6:25 declares right words are forcible — emphasizing that truthful speech has power, similar to sweetness making learning effective.

Job 4:3 notes that Job instructed many — a direct example of using speech to strengthen others, as in the main verse.