Once again, let us return to Erskine College in Due West, S.C., where Christians -- under the watchful gaze of The New York Times -- are arguing about 2,000 years of Christian tradition on sexuality and marriage. Click here for my first GetReligion post on this controversy.

The headline: "Erskine College’s View on ‘Sin’ Jolts Gay Athletes." The key word, of course, is "sin" -- a word that is increasingly difficult to use publicly in America these days, no matter what is stated in the Bible and/or the First Amendment.

Now, loyal GetReligion readers will know that the word "sin" plays a key role in the infamous "tmatt trio," that series of doctrinal questions that I have used while reporting on the fault lines inside Christian churches, denominations, parachurch groups, etc. At one point, we jokingly suggested using "tmatt3" as shorthand for these questions. Once again, here they are:

* Are biblical accounts of the resurrection of Jesus accurate? Did this happen?

* Is salvation found through Jesus, alone? Was Jesus being literal when he said, "I am the Way, the Truth, and the Life. No one comes to the Father except through me."

* Is sex outside of marriage a sin?

With that in mind, let's look at the crucial passage in the Times piece that deals with, yes, the Erskine administration's attempts to defend the use of a doctrinal covenant that draws some boundaries around the voluntary association that is this private Christian college.