Many Christians have had an experience like this: when a person is anxious, restless, afraid, or even deeply distressed, quietly and repeatedly reciting a familiar Psalm or passage of Scripture can gradually change their emotional state. The restless heart begins to settle down, confused thoughts become more stable, fear begins to subside, and peace, joy, and hope gradually return. Why does this happen?

We usually say that it is because this is the Word of God, and God’s Word can comfort and strengthen us. That is certainly true. But if we take the question one step further, we can ask: How does God’s Word actually enter a person’s life? Why can a passage of Scripture that has already been memorized genuinely change a person’s emotional state at that moment? What exactly happens among the body, the nervous system, and the soul during this process? To answer these questions, we must first begin with a more fundamental question: What is a human being?

1. What Is the Real “Me”?

When we say “I,” we usually think first of our physical body. But the body is not the whole person. According to the biblical understanding of human life, a person has not only a physical body but also a soul. The body we see today grows old and eventually dies, but the human soul is not identical to this physical body.

In fact, our thoughts, emotions, judgments, choices, and will must all be expressed through the body, but the body itself is not the sole subject of these activities. As I write this article, it is “I” who forms these thoughts; my hands simply enter those thoughts into the computer. When a person speaks, the mouth is the instrument of expression. When a person listens to someone else, the ears are instruments for receiving information.

The nervous system connects the soul with the physical body. Human life in this world can therefore be understood as operating through three closely connected levels: the soul, the nervous system, and the physical body. The soul is the subject of life, the nervous system carries information, controls the body, and enables the expression of life, while the physical body is the bodily form through which the soul acts in the physical world. Once we understand this relationship, we can move to the next question: What exactly is the soul?

2. Why Are the Soul and the Nervous System So Closely Connected?

The human nervous system is an extraordinarily complex system of electrical activity. The human brain contains approximately 86 billion neurons. Communication among neurons depends on changes in membrane potential, the movement of ions, and neural electrical signals. Wherever electrical activity occurs, electromagnetic phenomena necessarily accompany it.

When a neuron becomes active, corresponding electromagnetic changes occur. When enormous numbers of neurons remain active simultaneously and continuously, their electromagnetic activities interact and combine. The continuous electrical activity of the nervous system as a whole therefore forms an integrated, continuous, and constantly changing electromagnetic field. This overall electromagnetic field generated by the continuous electrical activity of the nervous system is the human soul.

In other words, the nervous system and the soul are not two completely disconnected things operating independently of each other. The nervous system operates through neurons, electrical signals, ions, and neurotransmitters, while the soul exists and operates as an integrated electromagnetic field. The same activity of life therefore has two simultaneous aspects: when neurons generate electrical activity, electromagnetic changes occur at the same time. This is the first key to understanding emotion.

3. Why Is Emotion Both Neural Activity and a State of the Soul?

Every day we experience many different emotions. Peace, joy, contentment, and hope are positive emotions, while anxiety, fear, restlessness, uneasiness, and distress are negative emotions. None of these emotional states appears out of nowhere.

From the perspective of the nervous system, emotions are accompanied by the activity of different neural networks, changes in ion activity, and the release of different neurotransmitters. The reason we can actually feel pleasure, pain, tension, or relaxation is that the nervous system and the body have entered different functional states.

But whenever neural activity occurs, electromagnetic changes necessarily occur at the same time. Therefore, when the nervous system enters an anxious, restless, or conflicted state, the soul—the integrated electromagnetic field—simultaneously enters a more disordered and uncoordinated state. Conversely, when the nervous system enters a peaceful, joyful, and coordinated state, the electromagnetic field of the soul simultaneously becomes more orderly, stable, and coordinated.

A simple analogy can help us understand this. When an old radio is not properly tuned to a station, all we hear is chaotic static. Once the frequency is properly tuned, the static disappears and clear, orderly music emerges. Negative emotions resemble this kind of disorder, while peace and joy more closely resemble a coordinated and orderly state. Of course, the human soul is far more complex than a radio, but the analogy helps us grasp one basic distinction: disorder versus order.

4. The Relationship Between the Nervous System and the Soul Is Not One-Way

There is another extremely important mechanism here. The fact that neural activity produces electromagnetic changes does not mean that causation flows only in one direction, from neurons to the electromagnetic field. The electromagnetic field itself can also act back upon neurons. Human life therefore operates within an ongoing two-way cycle.

On one side, neurons generate electrical activity and thereby produce electromagnetic changes. On the other side, changes in the overall electromagnetic field act back upon neurons, influencing their ionic activity and functional state and, in turn, affecting the release of neurotransmitters. Once an emotional state develops, it can therefore continue to sustain itself through this cycle.

Consider a person experiencing intense anxiety. Anxiety-related neural activity continues to occur while simultaneously producing a more disordered overall electromagnetic state. That disordered field then acts back upon the neurons, helping sustain the neural activity associated with anxiety. This is why a person may clearly know, “I should stop worrying,” yet cannot immediately end the anxiety simply by telling himself not to think about it. Anxiety is no longer merely an isolated thought; the entire life system has entered a particular state of operation.

How, then, can this state be interrupted? We cannot reach directly into ourselves and rearrange the electromagnetic field of the soul by hand. What we can do is use a concrete behavior to activate another pattern of neural activity and introduce a new, orderly state into the existing cycle. This brings us to memorizing and reciting the Word of God.

5. Why Does God’s Word Need to Be Memorized?

When a passage of Scripture first appears before us, it is still external information. But when a person repeatedly memorizes a Psalm until it has truly been learned, that information no longer exists only on a page or a phone screen. It has entered the nervous system and formed a relatively stable neural network.

This step is crucial. Once this neural network has been established, it can later be reactivated simply by beginning to recite the passage, even when the Bible is not physically present. For example, if someone knows Psalm 23 very well, once he begins, “The LORD is my shepherd; I shall not want,” the following words can often continue almost naturally. This indicates that the information has already formed a relatively stable and continuous neural network.

When that network is activated, large numbers of connected neurons begin operating according to the pattern that has already been established. At this point, an important change begins to occur.

6. What Happens in the Brain When We Recite God’s Word?

Reciting a familiar Psalm involves far more than the movement of the mouth. Memory networks are active. Language systems are active. Auditory systems are active. The neural systems controlling the lips, tongue, and breathing are also active. Large numbers of interconnected neurons are activated in an organized sequence.

When neurons become active, they generate electrical signals; when neural electrical activity occurs, electromagnetic changes arise simultaneously. Therefore, when an already organized neural network is reactivated, it simultaneously produces a corresponding pattern of organized electromagnetic activity.

This is why memorization matters. You are not merely creating a few scattered thoughts in your mind at that moment. You are repeatedly activating an established neural system. When that network is activated as a whole, its corresponding electromagnetic activity is activated at the same time.

7. How Can Orderly Electromagnetic Activity Change Anxiety?

Suppose a person is experiencing severe anxiety. His overall state of life is already relatively disordered. At that moment, he begins reciting a Psalm he knows very well. As the recitation begins, the established neural network is rapidly activated. The neurons operate according to their established connections and simultaneously generate corresponding patterns of orderly electromagnetic activity.

This electromagnetic activity does not form something separate outside the soul, because it is itself occurring within the integrated electromagnetic field that constitutes the soul. A new pattern of orderly activity therefore enters an overall state that had previously been disordered.

We can picture this as a glass of cloudy water. A single drop of clean water may appear to make almost no difference, but if clean water continues to enter, the overall proportion of cloudiness gradually decreases. Recitation works in a similar way. Each time a person recites the passage, an orderly neural network is activated again; each activation of that neural network generates corresponding orderly electromagnetic activity. One instance may have only a limited effect, but through repetition, this orderly state continually enters the overall electromagnetic field of the soul. The original disorder begins to be reorganized, and the overall field gradually moves toward greater coordination and stability.

8. Why Does a Person Then Actually Feel Peace?

If the change stopped at the electromagnetic-field level, the person would not yet fully experience peace. To complete the cycle, another step must occur.

As the overall electromagnetic field becomes increasingly orderly and coordinated, it begins to act back upon the neurons. The ionic activity and functional state of those neurons consequently change, and the corresponding release of neurotransmitters changes as well. The neural state sustaining anxiety, tension, and restlessness begins to weaken, while neural states corresponding to peace, calmness, and positive emotion begin to strengthen.

At this point, the person actually begins to feel the difference. The intense restlessness is no longer as strong. The heart begins to settle. Fear diminishes. Thoughts become less chaotic. Peace, joy, and hope begin to return.

The complete process can therefore be understood in this way: God’s Word is memorized and forms a stable neural network within the nervous system. When the passage is recited, that network is reactivated. The neurons generate orderly electrical activity, which simultaneously produces orderly electromagnetic activity. This orderly activity enters the integrated electromagnetic field of the soul and begins to reorganize the previously disordered state. As the overall field becomes increasingly coordinated, it acts back upon the neurons, influencing ionic activity and neurotransmitter release. As a result, the person begins to experience peace, joy, and hope.

9. Why Does the Bible Repeatedly Emphasize Keeping God’s Word in the Heart?

From this perspective, we can better understand why Scripture does not merely encourage people to glance occasionally at the Word of God, but repeatedly emphasizes remembering it, meditating on it, and keeping it in the heart.

The psalmist says, “Thy word have I hid in mine heart, that I might not sin against thee.” (Psalm 119:11)

When God’s Word is truly “hidden in the heart,” it no longer exists merely in a Bible sitting on a table or as a temporary sentence displayed on a phone screen. It has become part of the internal structure of life. When a person repeatedly memorizes God’s Word during peaceful times, stable neural networks corresponding to those words are continually being established and strengthened. When fear, pain, temptation, or anxiety later arrives, those networks can be reactivated.

Therefore, memorizing God’s Word is not merely the act of remembering words. It is the process of engraving God’s Word into the operating system of life itself. Even when the external environment becomes chaotic, an established and stable neural network already exists within the person and can be activated again.

God’s Word enters human life through the nervous system and, through the continuous two-way interaction between the nervous system and the soul, exerts a real influence on the overall state of life. This allows us to understand from another perspective why the Word of God can strengthen life. It is not an empty form of comfort. Once God’s Word has truly been memorized, it no longer exists only on the printed page. It has entered the neural network, entered the operation of life, and can be reactivated every time it is recited.

When a person in the midst of inner disorder begins once again to recite those words, the order established through God’s Word is once again activated within his life. This is why a person in anxiety can regain peace through God’s Word, a person in pain can receive comfort again, and a person in weakness can recover hope.

God’s Word is not only something we can “know.” It can be engraved into life itself. And once it has been engraved into life, it can be activated again at the very moment we need it most.