A few things...

* Your boss parading his religion around and making you feel othered, while probably legal, is uncool.

* Though I would be remiss if I didn't point out that across America, it's by and large the Christian viewpoint that's flaunted at employees. I feel bad for you, but I'm also happy that you've been given an opportunity to understand why this is bad.

* You're protected from being _discriminated against_ based on his religious beliefs.

* That law being "paraded" is the one that protects you from your boss discriminating against you based on his religious beliefs.