Witness in the Word · Module 4 — The Anchor: What God’s Word Actually Does
Class 15 – Words Reveal the Heart
Source: It Is Written, Chapter Three
The Power of Words
This leads us to an essential question: What words are coming out of your mouth? Do you see the possibility for change, or do you feel trapped in a rut? The answers to these questions reflect the words you have been speaking.
“I have set before you life and death, blessing and cursing.” — Deuteronomy 30:19
The choice is ours.
The words we speak hold the power of life or death. They can inspire faith or induce fear. Scripture declares plainly:
“Death and life are in the power of the tongue.” — Proverbs 18:21
Jesus emphasized the seriousness of this truth, saying that we will give an account of every idle word spoken (Matthew 12:36). Many people live their entire lives unaware of this reality, often speaking negatively without considering the consequences.
Phrases such as “If not for bad luck, I would have no luck at all” reflect a mindset that works against one’s own life. When confronted, people often say they did not mean what they said. Yet spoken words set in motion patterns of thought and expectation. Whether intentional or not, words shape belief, and belief shapes outcome.
Negative words filled with fear are the opposite of faith. They give place to the enemy and allow what is spoken to gain influence (Ephesians 4:27). Words are not harmless expressions; they are spiritual instruments.
Life itself tends to shape our identity through responsibility, environment, and role. This is especially evident in the workplace. I once met a corporate engineer who claimed he was a different person at work than at home. That claim left me doubtful because Scripture teaches that a spring cannot yield both fresh and bitter water (James 3:11). Words reveal consistency of heart, not compartmentalization of identity.
It is easy to develop a critical or discouraging manner of speaking. Statements such as, “Something bad always happens to me,” or “This always goes wrong,” may seem casual, but they reinforce patterns of expectation. Words shape identity before both God and people. Do we fully grasp their weight and consequence?
Words are never neutral. They either produce life or death. Scripture assigns accountability to speech because speech reveals what governs the heart.
“For out of the abundance of the heart the mouth speaks.” — Matthew 12:34
Speech is not random. It is a report of what has been stored within.
Do words really matter? I saw an incident firsthand that forced this question into sharp focus. In our office, there was a secretary who was highly proficient, capable, organized, and dependable. Yet she lived on the negative side of life. Fear shaped her outlook, and fear repeatedly expressed itself in her words. She lived alone. Her husband had recently passed away, and she lived in near-constant anxiety. Over and over, she would say, “It will be my luck that someone will be hiding behind the door and hit me on the head when I come home from work.” This became a repeated confession, not a single remark.
One day, she did not report to work. Concern grew, and I was asked to go to her home. As I approached her house, her words came to mind. Her car was parked where it normally sat. I knocked and received no answer. I returned to the office, and the police were contacted. Later, entry was made into her home, and she was found deceased in the bathtub.
The purpose of this account is not to speculate beyond what can be proven. You may judge whether this was coincidence, tragedy, or the consequence of fear-filled confession. Scripture does not require speculation. Scripture requires caution:
“You are snared by the words of your mouth; you are taken by the words of your mouth.” — Proverbs 6:2
This means words do not end when they are spoken. They continue to work. They settle into memory, influence behavior, and shape response. The speaker may forget them, but the hearer often does not.
Jesus warned that our conversation must be governed by restraint and truth:
“Let your ‘Yes’ be ‘Yes,’ and your ‘No,’ ‘No.’” — Matthew 5:37
This is not a call to silence but a call to discipline. Words must be measured before they are released.
Foolish, careless, or harsh words are often spoken under emotion. Some people speak without pause, without thought, and without regard for consequence. Scripture sets a clear standard:
“Let no corrupt word proceed out of your mouth, but what is good for necessary edification.” — Ephesians 4:29
Words are not judged by intention alone, but by what they produce.
This does not mean believers never fail in speech. Scripture acknowledges human weakness:
“For we all stumble in many things.” — James 3:2
However, without intentional awareness, we naturally speak from the flesh rather than from the Spirit. The purpose of this writing is to bring awareness to speech and to teach how the written Word of God is meant to govern what we say.
We are all engaged in the same conflict—not with one another, but against spiritual forces that exploit careless speech (Ephesians 6:12). Words once spoken cannot be recalled. For this reason, speech must be disciplined before it is released, not repaired afterward.
Our setting often determines what we allow ourselves to say. It is frequently easiest to speak harmful words against those closest to us, especially when we are tired, frustrated, or overwhelmed. Words spoken in emotion still carry power. Apologies are necessary, but they do not always erase the effect. Scripture warns:
“A harsh word stirs up anger.” — Proverbs 15:1
Unknowingly, people often speak damaging phrases by habit. Statements such as “My arthritis,” or “I catch a cold every year,” may seem harmless, yet they reinforce expectation. Speaking from fear strengthens fear. Speaking from faith strengthens faith.
This truth is especially important concerning children. Parents often use dismissive or degrading language without realizing the long-term effect. Words spoken repeatedly over a child shape identity, confidence, and expectation. Encouragement builds vision; careless speech limits it. If we dislike being called names, we should not call children—or anyone else—such names.
The lesson is simple but demanding: we must become conscious of the words we speak. Are they formed from anger, fear, jealousy, or frustration? Or do they originate from a heart governed by love and truth?
Scripture was never meant to remain inactive in daily life.
“The word of God is living and powerful.” — Hebrews 4:12
Jesus Himself modeled disciplined speech. When tempted, He answered with Scripture, saying, “It is written” (Matthew 4:4, 7, 10). He did not argue emotionally or reason with circumstance. He responded with what God had already spoken.
If the Son of God relied upon the written Word to govern His speech, no believer can claim exemption from that discipline.
If we speak words that reinforce faith, hope, and expectation, the outcome will tend to follow that alignment. The opposite is also true. Fear-filled speech produces resignation and defeat. Scripture warns us plainly:
“God has not given us a spirit of fear, but of power and of love and of a sound mind.” — 2 Timothy 1:7
Life is often unfair, painful, and unpredictable. Scripture does not deny this reality. Yet when a person continually fills their inner life with negative words, the result follows the belief system of the heart.
“Keep your heart with all diligence, for out of it spring the issues of life.” — Proverbs 4:23
From this point forward, the question is no longer whether words matter. Scripture has already answered that. The question is whether our words will be governed by what is written, or by our natural human tendencies.
For Reflection
Read: Matthew 12:34; Proverbs 4:23
1. "Out of the abundance of the heart the mouth speaks." What do your unplanned, unfiltered words reveal about what is actually in your heart?
2. Where has fear-filled speech, rather than Scripture, been shaping your expectations for a situation?
3. What is one place your words and your actual heart condition do not match?
This Week: Keep a short daily note this week of any word you spoke that did not match what Scripture says is true, and bring each one to God in prayer.