What’s the biblical definition of marriage?
These examples of marriage in the biblical tradition illustrate the fluidity of the institution. To 21st-century Americans, these biblical understandings or definitions of marriage are strange and oppressive, but they are expressions of the culture and values of the biblical world. And as the culture and values of the society changed, so did its understanding of marriage.
Read the full article here: http://www.christiancentury.org/blogs/archive/2015-05/what-s-biblical-definition-marriage