Any list of the two or three most influential evangelical Protestant colleges and universities in America has to include Calvin University in Grand Rapids, Mich.

Hang around at Council of Christian Colleges and Universities gatherings (I was a senior fellow and journalism professor for 20 years) and you’ll hear chatter about the “Calvin mafia” that has long provided intellectual clout shaping trends and programs nationwide. In other words, what happens at Calvin doesn’t stay at Calvin.

You could say that was the Big Idea in this week’s “Crossroads” podcast (CLICK HERE to tune that in), which focused on a Religion News Service story with this headline: “Fallout over LGBTQ spouses at Calvin University captures broader evangelical divide.” The second line: “A same-sex wedding led the university to split with its longtime research center over Christian teaching on sexuality.” Before we look at the overture, let’s jump down to a crucial passage in this story:

Provost Noah Toly did confirm that all faculty and staff, including those at the center, are required to follow the school’s employment policies, which bar sex outside of a marriage between a man and a woman. He also said that hiring managers and supervisors are required to enforce the policy.

“Employment policies” is a rather secular way of stating that Calvin has a doctrinal statement linked to its ties to the Christian Reformed Church. It’s safe to assume that, at some point, faculty and staff sign a copy of that statement or a “lifestyle covenant” that states the doctrines in practical terms. At some schools, faculty and staff reaffirm that doctrinal statement/covenant every year.

When we are talking about defining the boundaries of a voluntary association of this kind — an explicitly Christian liberal-arts university — “doctrines” are more important than “policies.” Keep that quote from the provost in mind as you read the top of this RNS story. This is long, but crucial:

For years, Calvin University, a leading evangelical school in Grand Rapids, Michigan, has tried to walk a fine line of being welcoming to LGBTQ students while still enforcing traditional Christian Reformed Church views on sexuality.