Lunatic(K)
The Term and Its Origin
The word "lunatic" appears in the King James Version of the Bible as a translation of the Greek word seleniazomai, which literally means "moon-struck." This term reflected the ancient belief, widespread across many cultures, that the moon in certain phases could cause or worsen diseases, particularly those with periodic or recurring symptoms. Modern translations have replaced "lunatic" with "epileptic" (ESV, NASB, NIV), which more accurately describes the condition being portrayed.
The English word "lunatic" eventually broadened to encompass any form of mental illness, losing its connection to the original lunar association. Similarly, the Greek term may have already lost its etymological force by the New Testament period, simply designating a recognizable medical condition without implying that readers literally believed the moon was the cause.
Epilepsy in Matthew's Gospel
The Greek word seleniazomai appears in only two New Testament passages, both in Matthew. In Matthew 4:24, it is listed among various conditions Jesus healed: "They brought to him all the sick, those afflicted with various diseases and pains, those oppressed by demons, those having seizures, and paralytics, and he healed them." The distinction between those having seizures (epileptics) and those oppressed by demons is noteworthy — Matthew treats them as separate categories.
The more detailed account appears in Matthew 17:14-18 (paralleled in Mark 9:14-29 and Luke 9:37-43). A father brings his son to Jesus and pleads, "Lord, have mercy on my son, for he has seizures and he suffers terribly. For often he falls into the fire, and often into the water" (Matthew 17:15). Mark's account adds vivid detail: the boy would be seized, thrown to the ground, foam at the mouth, grind his teeth, and become rigid (Mark 9:18). These descriptions closely match the symptoms of epileptic seizures.
Jesus rebuked the unclean spirit, and the boy was healed instantly. When the disciples asked why they had been unable to cast it out, Jesus pointed to the importance of faith and prayer (Matthew 17:20-21; Mark 9:29).
The Intersection of Illness and Spiritual Forces
The healing of the epileptic boy raises an important question about the relationship between physical illness and spiritual forces in the biblical worldview. In this particular case, the boy's symptoms are attributed to a demon (Mark 9:25), yet the symptoms themselves are recognizably medical. Matthew 4:24 distinguishes between demoniacs and those with seizures, suggesting that not all cases of epilepsy were attributed to demonic activity.
The Bible does not provide a systematic theory relating physical illness to spiritual causes. Some illnesses are presented as having natural explanations, others as resulting from demonic oppression, and still others as serving God's larger purposes (as with Paul's thorn in the flesh, 2 Corinthians 12:7-9). What remains consistent is that Jesus has authority over all forms of affliction, regardless of their origin.
Madness in the Old Testament
While the specific term for epilepsy is confined to Matthew, the broader concept of mental affliction appears in the Old Testament using several Hebrew terms. The word meshugga (from shagha, to be mad) describes Saul's erratic behavior and is used when David feigned madness before Achish, king of Gath, scratching marks on the doors and letting saliva run down his beard (1 Samuel 21:13-15). Achish responded, "Do I lack madmen, that you have brought this fellow to behave as a madman in my presence?"
Deuteronomy 28:28 lists madness among the curses for covenant disobedience: "The LORD will strike you with madness and blindness and confusion of mind." This passage does not specify a medical mechanism but presents mental affliction as one possible consequence of turning away from God.
King Nebuchadnezzar's period of insanity, during which he lived like an animal and ate grass (Daniel 4:33), has been compared by some scholars to a condition known as clinical lycanthropy or boanthropy. Daniel presents this episode as a divine judgment intended to humble the king until he acknowledged that "the Most High rules the kingdom of men" (Daniel 4:25).
Jesus' Compassionate Authority
The most significant theological takeaway from the biblical treatment of epilepsy and mental illness is the compassion and authority Jesus demonstrated toward those who suffered. In a culture where such conditions often brought social stigma and religious suspicion, Jesus consistently moved toward the afflicted rather than away from them.
The father's desperate plea in Matthew 17:15 — "Lord, have mercy on my son" — and Jesus' immediate response model the proper approach to suffering: honest appeal to Christ's power and trust in His compassion. Jesus did not blame the boy or his father for the condition. He healed completely and immediately.
This pattern continues throughout the Gospels. Whether the affliction was physical, spiritual, or some combination, Jesus' response was consistent: authority over the condition and compassion for the sufferer. The early church carried this forward, with James instructing the sick to call for the elders to pray and anoint with oil (James 5:14), maintaining the connection between faith, prayer, and healing.
Biblical Context
The Greek term for 'lunatic' (epileptic) appears in Matthew 4:24 and 17:15. The detailed healing account is paralleled in Mark 9:14-29 and Luke 9:37-43. Old Testament references to mental affliction include Deuteronomy 28:28, 1 Samuel 21:13-15 (David feigning madness), and Daniel 4:33 (Nebuchadnezzar's insanity). Luke 8:26-39 describes the Gerasene demoniac, another intersection of mental disturbance and spiritual forces.
Theological Significance
The biblical treatment of epilepsy and mental illness demonstrates Jesus' comprehensive authority over all forms of human affliction. The distinction Matthew draws between demoniacs and epileptics shows that the biblical authors did not simplistically attribute all illness to demons. Jesus' compassionate response to the suffering challenges both ancient stigma and modern dismissiveness. The father's cry for mercy and Jesus' healing point to the gospel pattern: human need met by divine compassion and power.
Historical Background
The belief that the moon influenced health, particularly conditions with periodic symptoms like epilepsy, was widespread in the ancient Mediterranean world. Hippocratic writers challenged this view, arguing for natural causes, but popular belief persisted for centuries. The English word 'lunatic' preserves this association. In the ancient Near East, epilepsy was often attributed to supernatural causes. Mesopotamian medical texts describe seizures and prescribe both medical treatments and ritual incantations. Roman law used the term 'lunaticus' in legal contexts related to mental competency. The social stigma attached to epilepsy in antiquity makes Jesus' public, compassionate healing all the more remarkable.