Is My Loved One Sinful or Sick?

A Biblical Response to Modern Diagnoses
by David M. Tyler, PhD

Nearly all marriage and family problems are the result of someone’s sinful behavior and attitude. Sadly, in today’s culture there has been a major shift in how people view these struggles. More and more, what the Bible clearly calls sin is being described as a sickness or disorder. This confusion, often referred to as the debate of sin vs sickness, creates serious problems for Christians, because it replaces biblical categories with medical or psychological ones.Nearly all marriage and family problems are the result of someone’s sinful behavior and attitude. Sadly, there has been a major shift in how society views sinful behavior. What the Bible calls sin, our culture increasingly labels as sickness or disorder.

This confusion is not just cultural but deeply personal for many Christians. When we stop calling sin what it is, we lose the clarity and hope God gives us in His Word. Instead of dealing with sin biblically through confession, repentance, and change, people are encouraged to see themselves as helpless victims of a diagnosis.

From Sin to Sickness: A Dangerous Redefinition

For example, the sexual sinner Paul wrote about in 1 Corinthians 6:13 is commonly referred to by believers and unbelievers alike as a “sex addict.” The word “addict” implies a disease or disorder, something outside a person’s moral responsibility. Yet Scripture identifies it as sexual immorality, a sin that requires repentance, not treatment.

The thief mentioned in Ephesians 4:28 is now called a kleptomaniac. The drunkard condemned in 1 Corinthians 6:10 is no longer considered to have a moral problem but a sickness. He is called an alcoholic, as though his choices are not sinful but symptoms. The rebellious child described in 2 Timothy 3:2 is labeled with a behavioral disorder, as if defiance is simply a matter of brain chemistry.

Each of these shifts takes away the biblical categories of sin and righteousness, replacing them with psychological labels. Instead of accountability before God, people are offered excuses that place the blame on biology, upbringing, or environment.

Why This Matters for Christians

This redefinition is not harmless. When sin is rebranded as sickness, the solution changes too. Instead of turning to Christ for forgiveness and transformation, people are told to seek therapy, medication, or self-management strategies. These may provide temporary relief, but they cannot reconcile a sinner to God or produce true heart change.

The Bible clearly teaches that sin is a matter of the heart: “For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false witness, slander” (Matthew 15:19). When we call sin by its proper name, we can also offer the true solution, grace and forgiveness through Christ.

(For more on this, see my book Deceptive Diagnosis: When Sin Is Called Sickness.)

The Biblical Path to Healing

The good news is that the gospel speaks directly to the struggles our culture calls sickness. The drunkard can put off drunkenness and put on sobriety in Christ. The thief can stop stealing and start working to bless others. The sexually immoral can repent and walk in purity by the Spirit’s power.

This is the biblical pattern of change: putting off the old self, being renewed in the spirit of the mind, and putting on the new self (Ephesians 4:22–24). Real transformation is not found in psychology but in the living and active Word of God (Hebrews 4:12).

(Learn more about biblical change in my Podcast.)

Conclusion: Hope in Christ, Not a Diagnosis

So is your loved one sinful or sick? According to Scripture, sinful. That may sound harsh in today’s culture, but it is actually hopeful. Sickness may be managed, but sin can be forgiven. Christ came to save sinners, not the self-diagnosed, not the merely disordered, but those who recognize their rebellion against God and turn to Him for mercy.

As biblical counselors, parents, pastors, and believers, we must lovingly speak the truth. Call sin what it is. Point people to Christ. And remember that the gospel, not a diagnosis, s the power of God unto salvation (Romans 1:16).

📖 More Resources for You

If this article encouraged you, I invite you to:

Written by : David M. Tyler, Ph. D.

David M. Tyler has a Doctor of Philosophy Degree in Biblical Counseling. He is the Director of Gateway Biblical Counseling and Training Center in Fairview Heights, Illinois; the Dean of the Biblical Counseling Department for Master’s International University of Divinity in Evansville, Indiana. Dr. Tyler is certified by the International Association of Biblical Counselors and Association of Certified Biblical Counselors. He lectures and leads workshops on Biblical counseling.

Related Posts