dual_sport_dork , 8 hours ago

I guarantee you the bibles in question are provided by some local (private) fundamentalist organization. There’s no way the prison is spending its own money on that. So then you’ve got to look at who is the biggest group of religion-peddlers to find your most likely source.

In America at present, the various Christianity-adjacent sects are basically the only religious groups out proselytizing in any significant numbers. I suspect that compared to the Mormons, Jehovah’s Witnesses and Seventh Day Aventists, and assorted Evangelical/Baptist types, everyone else is basically just a rounding error.

If experience is any judge, plenty of dudes go into prison and come out Muslim. So Allah must still find them somehow.