It’s impossible to find any biblical warrant for the so-called ideal American family of one husband, one wife and 2.3 (or so) children. Families, in fact, always have come in different shapes and sizes and, until modern times, it has been unusual for anyone to claim that this or that version of family is normative for all and exists with the specific blessing of God.
It wasn’t until the 1970s that scholars began to do much academic study of families and their structures throughout history. They found many different models in many different cultures, of course, so to use the phrase “traditional family values” is to raise the questions of whose tradition and what values.In many ways, families should be able to define themselves. That is, if a household containing a mother, father and three children constitutes a family, why can’t a household containing a grandmother, two grandchildren and a cousin? Or a legally married (or simply cohabitating) gay couple with an adopted daughter?