In Matthew 12:34, Jesus links speech to the heart's abundance — the same principle of treasure producing good or evil.

Matthew 13:52 uses the same 'bring out of treasure' image for a disciple who shares new and old wisdom.

Matthew 23:28 exposes hypocrites whose outward righteousness hides inner evil—the opposite of the heart producing matching actions in Matthew 12:35.

Proverbs 15:28 contrasts the righteous heart that studies how to answer with the wicked mouth that pours evil — identical to Matthew 12:35's two treasures.

Ephesians 4:29 commands only good, edifying speech — the NT application of the heart's treasure producing good words.

Proverbs 16:21-23 explicitly states the heart teaches the mouth, making wise speech flow from inner wisdom — a perfect parallel.

Proverbs 15:4 directly echoes this: a wholesome tongue brings life, perverseness breaks the spirit — good or evil from the heart.

In Proverbs 12:17-19, the truthful lip vs lying tongue illustrates the same principle: speech reveals the heart's treasure.

Colossians 4:6 urges speech always with grace — a direct NT outworking of the good treasure in the heart.

Psalm 37:30 describes the righteous uttering wisdom and justice, matching the good man bringing good from his treasure.

Proverbs 10:20 compares the righteous tongue to choice silver, echoing the idea that a good heart yields valuable speech.

Proverbs 16:23 directly says the wise heart makes speech judicious — mirroring the good treasure producing good words.

Luke 6:45 is a parallel saying: the good treasure of the heart produces good, and evil treasure evil—identical teaching.

Proverbs 4:23 urges guarding the heart because it is the spring of life — same principle that the heart's treasure determines what comes out.

Psalm 49:3 links the heart's meditation to the mouth's wise speech — exactly the connection Jesus makes.

In Psalm 45:1, the heart overflows with a good matter — the same principle of the heart's treasure producing good speech.

1 Timothy 1:5 says love issues from a pure heart—matching the principle that good treasure produces good actions.

Romans 3:13 describes evil speech ('open grave', 'venom') from unrighteous hearts—aligning with evil treasure producing evil.

Zechariah 8:17 warns against devising evil in hearts—the same internal source of evil that Matthew 12:35 describes as evil treasure.

Ecclesiastes 10:12 contrasts the wise man’s favorable words with the fool’s self‑destructive ones — outcomes that stem from inner character.

Proverbs 18:21 highlights the tongue's power over life and death — complements the source by showing the weight of the speech that flows from the heart.

Proverbs 12:6 contrasts wicked words that lie in wait with upright speech that rescues, aligning with the evil man's output here.

Proverbs 10:21 says the righteous nourish many with their lips, similar to bringing good from good treasure.

Acts 11:24 describes Barnabas as a good man full of faith—an example of the good person producing good from good treasure.