Understanding the connection between our words and what is happening inside our hearts
Have you ever said something and immediately thought, “Where did that come from?” Maybe it was a sharp reply, a careless joke, a complaint, or words you wished you could take back. We have all had moments when our mouth revealed something our heart was carrying.
Jesus said it this way in Matthew 12:34: “Out of the abundance of the heart the mouth speaks.” In simple words, what fills our heart eventually shows up in our speech. Our words are not always random. They often reveal what we truly believe, value, fear, love, or struggle with.
Words Are Like Windows
Our words are like windows into the heart. They give others a glimpse of what is going on inside us. A person who often speaks with kindness, gratitude, patience, and encouragement is usually showing a heart that is being shaped by love and humility.
On the other hand, if someone’s words are constantly bitter, harsh, dishonest, critical, or cruel, that speech may be showing pain, pride, anger, fear, jealousy, or sin that needs attention. This does not mean we judge people harshly over one bad moment. Everyone has weak days. But patterns in our speech often reveal patterns in our hearts.
The Tree and the Fruit
Jesus also used the picture of a tree and its fruit. A healthy tree produces healthy fruit. A bad tree produces bad fruit. In the same way, our lives and words show what kind of roots are growing inside us.
Luke 6:45 says, “The mouth speaks what the heart is full of.” That means our speech is not only about vocabulary or personality. It is connected to what we store inside—our thoughts, desires, attitudes, wounds, habits, and faith.
If the heart is full of resentment, resentment will eventually come out. If the heart is full of pride, pride will find a voice. If the heart is full of fear, fear may come out as control, criticism, or worry. But when the heart is being filled with God’s grace, truth, and love, our words can become more gentle, honest, wise, and life-giving.
Why Our Words Matter
Words are powerful. They can build someone up or tear someone down. They can bring peace or stir conflict. They can comfort the hurting or deepen a wound. That is why the Bible takes speech seriously.
Sometimes we focus only on controlling our mouths. That is important, but Jesus goes deeper. He shows us that the real issue is not just the tongue; it is the heart behind the tongue. If we want better words, we need God to work on the place those words come from.
A Simple Heart Check
One helpful way to grow is to pay attention to our speech and ask honest questions:
- What do my words reveal about what I am carrying inside?
- Do I speak more with gratitude or complaint?
- Do my words bring healing or hurt?
- Am I quick to criticize but slow to encourage?
- Do I need to ask God to heal bitterness, fear, pride, or anger in my heart?
These questions are not meant to shame us. They are meant to help us grow. God does not only want to change our vocabulary. He wants to change our hearts.
Let God Fill the Heart
The good news is that we are not left to fix ourselves alone. God can renew the heart. As we spend time in His Word, pray honestly, confess what is wrong, forgive others, and allow the Holy Spirit to shape us, our words begin to change too.
Kind words do not come from pretending everything is fine. They come from a heart that is learning to receive God’s kindness. Patient words come from a heart learning to trust God. Humble words come from a heart that remembers grace.
Closing Reflection
“Out of the mouth the heart speaks” is more than a warning. It is an invitation. It invites us to listen to our own words and ask God what they may be showing us. It reminds us that speech is not just about communication; it is about character.
If our words have been harsh, careless, or bitter, we can bring that to God. If our hearts are tired, wounded, or full of worry, we can bring that to Him too. He is able to heal the heart and teach the mouth to speak with grace.
Closing Prayer
Lord, help me pay attention to my words. Show me what they reveal about my heart. Heal what is wounded, correct what is wrong, and fill me with Your love, truth, patience, and grace. May my words reflect a heart that is being shaped by You. Amen.
What to Remember Today
Our words reveal what is growing in our hearts. If we want our speech to be more loving, honest, and life-giving, we need God to keep shaping the heart those words come from.
Minister A Francine Green, October 2026