u/Ghost-Sister

I work as a school librarian (in Sweden) and got a request for "christian" books, the authors the student asked for specifically was John Piper and Paul Washer. I have no knowledge of either Piper or Washer, but made a tiny bit of research and deemed them not fit for a school library. My reasoning is their view on gender roles and dogmatic preaching respectively (as mentioned I haven't done a deep dive in to them). Now I'm looking for recommendations of other "chrisitan" litterature, alternativs to the kind of teaching Piper and Washer seem to stand for. Maybe something "softer" to counteract their viewpoint. I know nothing of christian literature, all recommendations welcome. The student is 14 or 15, male.