What Does 1 John 5:17 Mean?

All unrighteousness is sin: and there is a sin not unto death. John clarifies that while he's discussed sin leading to death, all unrighteousness qualifies as sin. "All unrighteousness is sin" (pasa adikia hamartia estin)—adikia (ἀδικία) means unrighteousness, injustice, or wrongdoing. Any violation of God's righteous standards constitutes sin. There are no innocent wrongs or acceptable unrighteousness. This guards against minimizing sin or creating categories of acceptable wrongs.

This statement prevents misunderstanding verse 16. The distinction between sin unto death and sin not unto death doesn't imply some sins aren't really sins or don't matter. All unrighteousness is sin, all sin is serious, and all sin grieves God and requires Christ's atoning blood. However, not all sin results in the temporal judgment of physical death. God's discipline varies in severity based on the sin's nature and the sinner's heart.

"And there is a sin not unto death" (kai estin hamartia ou pros thanaton) reassures believers. While some sin leads to death (v. 16), not all sin does. Christians struggle with sin (1:8), but this doesn't mean every sin results in death. God's discipline is measured and purposeful—chastening for growth (Hebrews 12:5-11), not always ultimate judgment. This balance guards against both presumption (treating sin lightly) and despair (assuming every failure brings death). We should take all sin seriously while trusting God's grace and measured discipline.