Thank you for this interesting question about interfaith marriage.The Bible does speak clearly into this issue and we hope this answer can explain it.In July 2010, I commissioned a nationally representative survey of 2,500 people, including an oversample of people in interfaith marriages. Marriages between people of two different religions are becoming more common in every area of the country, and for men and women regardless of educational status or income level. Couples in interfaith marriages are, on average, less happy than same-faith ones.I asked respondents about how old they were when they married, how they were raising their children, how they felt about members of other faiths, how often they attended religious services, and how welcoming they thought their religious communities were to interfaith families, along with dozens of other questions. In certain faith-combinations they are more likely to divorce.The results--combined with interviews I conducted with members of interfaith couples, religious leaders, marriage counselors and academic researchers--appear in my new book "'Til Faith Do Us Part: How Interfaith Marriage is Transforming America." [pullquote] Here are some highlights: 1. While roughly a third of all evangelicals’ marriages end up in divorce, that climbs to nearly half for marriages between evangelicals and non-evangelicals.It is especially high for evangelicals married to someone with no religion--61%. Jews are the most likely to marry out and Mormons are the least likely.
You will be able to read all about them and interact with them in various ways on our site for free.And so the contact that occurs through an extended family connection is also likely to have this effect.