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Let There Be Light: The Science and Spirit of Awakening

Medically Reviewed By: Dr. Neil Neimark, M. D.
Last Updated: October 29, 2025

Part 1 of 3 | Science and Spirit: How Healing Happens

Key Points Summary

  • "Let there be light" means "May it become light."
    In Hebrew, Y'hi Or expresses not a command, but a Divine yearning - a wish that even darkness, pain, or illness may one day be transformed into light.
  • Mindset changes biology.
    Neuroscience shows that how we interpret challenges directly affects brain function, hormone balance, and inflammation - turning stress responses into healing responses.
  • Reframing transforms the brain.
    Studies from Columbia University and Harvard demonstrate that positive reinterpretation of pain or adversity measurably changes activity in the amygdala and prefrontal cortex, reducing stress and promoting resilience.
  • Every darkness conceals light.
    Kabbalah teaches that within every struggle lies Or HaGanuz - a hidden radiance waiting to be awakened through faith, curiosity, and compassion.
  • Healing begins with perception.
    When we stop asking "Why did this happen to me?" and start asking "Why did this happen for me?" we ignite both spiritual and biological healing - allowing darkness itself to become light.

When Healing Begins with Light

Every time I sit with a patient facing serious illness, I find myself asking the same question: How can I help them heal - not only in their body, but in their mind and spirit?

And I often think about some of the very first words ever spoken in the Bible.

In Hebrew, they are יְהִי אוֹר - Y'hi Or - translated as "Let there be light."

But the Hebrew holds a deeper, more beautiful meaning: "May it become light."

It isn't a command. It's a yearning - a Divine wish that even darkness itself, our pain, fear, or illness, might one day turn into light.

What the Science Shows

Modern science is beginning to confirm what ancient wisdom has always known: the way we see our challenges changes how our body responds to them.

When we experience stress or loss, the brain's limbic system activates our fight-or-flight response - increasing inflammation, cortisol, and blood pressure.

But when we shift our mindset toward hope or purpose, that same brain circuitry can quiet the stress response and activate healing.

Research from Columbia University (Ochsner et al., Nature Neuroscience, 2002) showed that reframing a negative experience - simply changing how we interpret pain - measurably alters activity in the amygdala and prefrontal cortex, regions that regulate emotion and stress.

Other studies from the National Institutes of Health and Harvard Medical School have shown that positive reframing and mindfulness can lower inflammation markers, improve immune function, and enhance recovery.

In simple terms: our thoughts and beliefs create measurable biological change.

Light isn't just a metaphor - it's a shift in brain chemistry, hormone balance, and cellular repair.

The Deeper Meaning

The Kabbalists taught that within every darkness lies a hidden radiance - what they called Or HaGanuz, the "concealed light."

This light, they said, is waiting to be awakened when we face hardship with faith, curiosity, and compassion.

When we ask, "Why is this happening to me?" we often stay stuck in fear.

But when we ask instead, "Why is this happening for me?" something shifts inside us. The darkness begins to reveal its purpose.

This moment of re-perceiving - of letting it become light - is where true healing begins.

Science Meets Spirit

From a biological view, that shift in perspective triggers measurable change in the body's stress circuitry.

From a spiritual view, it's the same moment described in the Book of Genesis:

"And God said, 'May it become light' - and it became light."

Healing isn't about denying the darkness.

It's about discovering the hidden light within it - the spark that transforms suffering into growth.

The Bottom Line

When we change how we think and start looking for light, even in our darkest moments, that's when the real healing of body and soul begins.

And as we'll see in Part 2, modern science now shows that this change in thinking doesn't just improve mood - it actually reshapes the brain, nervous system, and immune response toward healing and hope.

References

  1. Ochsner K.N., et al. "Rethinking Feelings: An fMRI Study of the Cognitive Regulation of Emotion." Nature Neuroscience, 2002; 5(11): 1253-1259. doi:10.1038/nn963
  2. National Institutes of Health. "Mindfulness, Stress, and Health." nih.gov
  3. Harvard Medical School. "The Science of Positivity: How Optimism and Reframing Change the Brain." health.harvard.edu
  4. The Zohar, Genesis (1:3) - Interpretation of Y'hi Or - May It Become Light
  5. Schneerson, M.M. (The Lubavitcher Rebbe). Letters on Healing and Faith.Kehot Publication Society, 1994.

Go To Part 2 of 3 | Science and Spirit: How Healing Happens

Dr. Neil Neimark, M. D.
Medical Director
support@mdPersonal.com
Dr. Neimark is a board-certified family physician, who attended the Ohio State University College of Medicine where he graduated with honors in 1981 and was elected into the scholastic medical honor society, Alpha Omega Alpha. While completing his internship, Dr. Neimark became disenchanted with traditional medicine's focus on treating the symptoms of disease, rather than dealing with the root cause. He realized that even with the best of medical care and technology, patients were unable to break out of the cycle of recurring illness.

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