"The Christian Life" is one of the highlights of The Byrds' 1968 album Sweetheart of the Rodeo. But it was probably inevitable that it would be misunderstood. No, Gram Parsons wasn't trying to convert his listeners to Christianity. He had much eager sinning left to do in his short lifetime. On the other hand the song has nothing to do with peak-2020 "everything is about race" cultural politics. I don't know where you'd even get something like that.
No, the simple truth is that Parsons heard the Louvin Brothers' original and was moved by it. Therefore he covered it with the Byrds, and opted to treat the sentiment behind it respectfully, whether he shared it or not.