𝗧𝗛𝗘 𝗠𝗢𝗨𝗧𝗛 𝗥𝗘𝗩𝗘𝗔𝗟𝗦 𝗧𝗛𝗘 𝗛𝗘𝗔𝗥𝗧

THE MOUTH REVEALS THE HEART

“Out of the abundance of the heart the mouth speaketh.”
Matthew 12:34 (KJV)

INTRODUCTION

Words are never neutral.
What comes out of the mouth reveals who rules the heart—sin or grace, flesh or Spirit, self or Christ.

The Bible contrasts two mouths:
The mouth of the wicked — controlled by the flesh and deception
The mouth of the righteous — governed by truth and grace

Today we will examine 9 CLEAR DISTINCTIONS between these two mouths and learn how believers are called to speak in this present age of grace.

DECEPTIVE SPEECH
“His mouth is full of cursing and deceit.” — Psalm 10:7

Mouth of the Wicked
Distorts truth for advantage
Hides motives behind smooth words
Speaks lies without fear
Romans 3:13

Mouth of the Righteous
Declares truth plainly
Speaks honestly without manipulation
Reflects Christlike integrity
Ephesians 4:25

SELF-EXALTING SPEECH
Proverbs 16:18

Mouth of the Wicked
Magnifies self
Boasts in achievements
Seeks personal glory
2 Timothy 3:2

Mouth of the Righteous
Magnifies Christ
Boasts only in the cross
Gives God the glory
Galatians 6:14

CORRUPTING SPEECH
Proverbs 18:21

Mouth of the Wicked
Tears down others
Spreads bitterness
Poisons hearts
James 3:8

Mouth of the Righteous
Edifies with grace
Ministers healing
Builds faith
Ephesians 4:29

SIN-JUSTIFYING SPEECH
Isaiah 5:20

Mouth of the Wicked
Calls evil good
Defends sinful lifestyles
Normalizes rebellion
Romans 1:32

Mouth of the Righteous
Declares forgiveness
Points to redemption
Uplifts grace over sin
Romans 3:24

DOCTRINE-RESISTING SPEECH
2 Timothy 4:3–4

Mouth of the Wicked
Rejects sound doctrine
Prefers emotion over truth
Follows itching ears
Titus 1:16

Mouth of the Righteous
Proclaims the gospel
Loves sound doctrine
Stands on Scripture
Romans 16:25

FLESH-CONTROLLED SPEECH
Matthew 15:18

Mouth of the Wicked
Speaks from the flesh
Fueled by anger and pride
Reactively destructive
Galatians 5:19–21

Mouth of the Righteous
Led by the Spirit
Speaks peace and restraint
Reflects new life
Galatians 5:22–23

DIVISIVE SPEECH
Proverbs 16:28

Mouth of the Wicked
Sows strife
Creates factions
Promotes confusion
Romans 16:17–18

Mouth of the Righteous
Promotes unity
Speaks truth in love
Strengthens the body
Ephesians 4:3

HOPE-DESTROYING SPEECH
Job 19:2

Mouth of the Wicked
Discourages faith
Mocks godliness
Spreads despair
2 Peter 3:3

Mouth of the Righteous
Speaks hope
Encourages endurance
Points to eternal glory
Romans 15:4

DESTINY-REVEALING SPEECH
Matthew 12:37

Mouth of the Wicked
Reveals an unchanged heart
Exposes unbelief
Leads to judgment
Romans 2:5

Mouth of the Righteous
Reveals new creation life
Confirms salvation
Anticipates reward
2 Corinthians 5:17

CONCLUSION

Your mouth is not the problem—
your heart is the source.
A heart ruled by sin produces corrupt speech
A heart renewed by grace produces righteous speech
You don’t clean the mouth—
you renew the mind.
Romans 12:2

CALL TO ACTION

Examine your speech
“Let your speech be alway with grace.” — Colossians 4:6
Speak truth boldly
2 Corinthians 4:2
Edify intentionally
1 Thessalonians 5:11
Proclaim the gospel clearly
Romans 1:16

FINAL THOUGHTS

Your mouth is your microphone.
Your words preach before you do.
Grace-filled hearts produce gospel-filled mouths.
“The mouth of the righteous is a well of life.”
— Proverbs 10:11