What is a forbidden marriage in the Bible?

What is a forbidden marriage in the Bible? 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. Photo illustration, Shutterstock, Inc.

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. Photo illustration, Shutterstock, Inc.