Dominion Senior Living interview questions

Everything STARTED great: the traditional questions, friendly HR, etc. Then: after 30 minutes of talking: "Tell us about how your relationship with God is". Totally illegal question, by the way! I stated "strong faith, have ethics" (I did not name a church or indicate I attend S & W services, because I don't). I was polite. Answered the question, but had no elaboration. Didn't get the job.