What do you call a couple with different religions?

Interfaith marriage, sometimes called a mixed marriage, is marriage between spouses professing different religions. Although interfaith marriages are most often contracted as civil marriages, in some instances they may be contracted as a religious marriage.

Are interfaith marriages a sin?

Almost all Christian denominations permit interdenominational marriages, though with respect to interfaith marriage, many Christian denominations caution against it, citing verses of the Christian Bible that prohibit it such as 2 Corinthians 6:14–15, while certain Christian denominations have made allowances for