Among the forbidden couples are parent-child, sister-brother, grandparent-grandchild, uncle-niece, aunt-nephew, and between half siblings and certain close in-laws. This Levitical law is found in Leviticus 18:6-18, supplemented by Leviticus 20:17-21 and Deuteronomy 27:20-23.

What does the Bible say about unlawful marriage?

The New American Bible translates this passage as: But I say to you, whoever divorces his wife (unless the. marriage is unlawful) causes her to commit adultery, and whoever marries a divorced woman commits adultery.

Does the Bible say you Cannot remarry?

No. Although we may want to personally exercise “grace” and say remarriage after divorce is not a sin, the Bible clearly calls remarriage after divorce a sin because marriage only ends in death, not in divorce. We cannot condone what God clearly calls sin (Romans 1:32, Isaiah 5:20).

Why is adultery a sin in Christianity?

Christians believe that this commandment shows that God wants people to exercise sexual fidelity within marriage and chastity before marriage. Adultery means having sex with someone who you are not married to. Christianity teaches that adultery is wrong.