“Moreover thou shalt not lie carnally with thy neighbour’s wife, to defile thyself with her.”
Context:The book of Leviticus is part of the Torah, the first five books of the Old Testament, and it contains various laws and regulations given to the Israelites by God through Moses. Leviticus 18 focuses on sexual morality and provides instructions regarding prohibited sexual relationships.
Prohibition of adultery:Leviticus 18:20 specifically addresses the sin of adultery, which is the act of engaging in sexual relations with another person’s spouse. This verse emphasizes the importance of sexual purity and fidelity within marriage.
Commandment to avoid defilement:The verse also highlights the concept of defilement or impurity. By engaging in adultery, a person not only violates the sanctity of the marriage covenant but also defiles themselves morally and spiritually. God’s intention is for His people to maintain purity in their relationships, honoring the sacred bond of marriage.
Respect for neighbour’s marriage:The commandment against lying “carnally with thy neighbour’s wife” underscores the importance of respecting the boundaries and commitments of others. It prohibits any form of sexual immorality that undermines the institution of marriage and causes harm to others.
Broader principles:Beyond its immediate context, Leviticus 18:20 reflects broader principles found throughout the Bible. Jesus, in the New Testament, emphasized the sanctity of marriage and condemned adultery, teaching that even lustful thoughts constitute a violation of this commandment (Matthew 5:27-28). The apostle Paul also emphasised the importance of sexual purity and faithfulness within the context of marriage (1 Corinthians 6:9-10, 18; Ephesians 5:3).
Application today:While Leviticus contains specific laws given to the ancient Israelites, the principles underlying these laws remain relevant today. Adultery continues to be considered a violation of trust, fidelity, and the sanctity of marriage in many cultures and religious traditions. Christians, in particular, are called to honour God’s commandments, which include abstaining from sexual immorality (1 Thessalonians 4:3-5).

