Sexual Immorality

Sexual immorality names any sexual activity outside the boundaries Yahweh has set for marriage, and Scripture never treats it as a minor lapse in an otherwise private area of life. It is a sin against the body, against the person violated, and against God himself.

How does the Old Testament treat sexual immorality?

Genesis records one of the clearest instances of this violation in Dinah’s defilement by Shechem, described as an act that “he had done a disgraceful thing in Israel” (Genesis 34:7). The chapter refuses to soften what happened, and it also refuses to justify the deceitful slaughter her brothers carried out in response, showing that real evil answered with sinful vengeance compounds wrong rather than resolving it.

Why does Paul link sexual immorality to the believer’s body?

Paul grounds the seriousness of sexual immorality in the believer’s union with Christ: “Flee sexual immorality… the one who commits sexual immorality sins against his own body” (1 Corinthians 6:18), and identifies sanctification itself with abstaining from it (1 Thessalonians 4:3). Sexual immorality is treated throughout Scripture as a direct affront to God’s design for the body and for covenant faithfulness, never as a private matter without consequence. The articles below trace this theme through several key passages.