Is it a sin to commit suicide?

Protestant theology — especially in its Reformed and evangelical streams — has historically regarded suicide as a serious sin. The reasoning flows from several biblical principles. First, human life is not our own to take; we're stewards, not owners, of the bodies God gave us. The act of deliberately ending one's life is seen as a usurpation of God's sovereign authority over life and death 1 John 3:8. John writes plainly that sin originates with the devil: 'He that committeth sin is of the devil' 1 John 3:8, and many Protestant theologians have applied this principle to self-destruction as an act rooted in despair rather than faith.

Second, 1 John 5:16 introduces a sobering category — 'a sin unto death' 1 John 5:16 — which many Protestant commentators have historically associated with acts of final, unrepentant rebellion against God, including self-murder. It's worth noting, though, that contemporary evangelical and pastoral theology increasingly distinguishes between culpable sin and the tragic outcome of severe mental illness. Still, the mainstream Protestant verdict remains that suicide, as a willful act, is gravely sinful. Leviticus 5:17 reinforces that even sins committed without full awareness carry guilt before God Leviticus 5:17, which means ignorance or impaired judgment doesn't fully dissolve moral weight — though it does affect how God judges the heart.