The mentality and beliefs that some people possess can be literally unexplained and terrible to regulate.Some people have their own beliefs religiously and this intensely regulated and affects how they respond,interact and relate to.Been religious definitely doesn't have or lay an outcome to gambling.
However, religions practically opposes gambling and it never operates hand in hand with a lots of religious teachings, beliefs and references from the bible.It will be clearly seen that gambling has no place in the religions and spiritual approaches to pertaining to gambling.
Maybe some people believe that is superstitious so people must avoid before something bad happen to them. But they can not force people to follow their suggestion because people are free to choose what they want to do. If they want to still playing gambling, nothing can stop them except themselves so when you meet that people again, you can say that you will stop your gambling activity and thanks for the suggestion. But you can still playing gambling when you don't meet him because you like to playing gambling because you have a good control so you can prevent the big lose. People know that religions prohibit gambling so that will depends on each people. If they still playing gambling even if they know that is prohibit in their religions, they will return to casino and playing gambling. We can only suggest but the decision will be up to them.