Question
Hi Rabbi, I know that Adam and Eve had two sons, named Cain and Abel. I assume that Cain got married but I am not sure that Abel ever married since Cain killed him. My question: Who was Cain’s wife? Was she Eve's daughter? Did Eve even have daughters? Thank you

Question
Dear Rabbi, I was watching the funeral of a fallen Israeli soldier the other day at the military cemetery at Mount Herzl in Jerusalem. It was sad and I’m sure mine were not the only dry eyes. While watching, I remember hearing a custom for anyone who visits a grave to place a small stone on the headstone. What is the reason for this practice? Thanks, Rabbi!

Question
I am staying at a hotel right now. I just discovered that the hotel hosts church services in one of its meeting rooms every Sunday morning. What do I do about that?

Question
I recently read that if a young child eats non-kosher food, even unknowingly, it can affect their spiritual development. We have a son who is 12 years old now. And he is already ‘off the derech.’ He has no interest in Judaism, no matter how hard we try to persuade him. He was expelled from two Jewish day schools that considered him a troublemaker. We now send him to a secular private school where he excels in secular subjects, but gets even more non-Jewish influence. We are not happy, but it is the only option we have because legally he has to go somewhere. We also tried homeschooling him and hiring a private rebbe, but that didn’t work. He has no desire to have a bar mitzvah. We hired a tutor, but he misbehaved so much, the tutor didn’t want to work with him. We are really frustrated and we get little sympathy in our community. Many people seem to think it is our moral failure as parents. He does not observe Shabbat. He spends time on Saturday using his electronic devices and getting rides from parents of non-Jewish friends. It is impossible to control him. We are very busy trying to raise all our other children with Torah values and can’t restrain him from this. When he was in preschool, we had him spend time with a relative who told us they were observant and kept strictly kosher. After that, we found out they were far from observant and they deceived us and gave him treif. We were so infuriated that we cut most of our ties to that relative. Our son does not remember the time he spent there. He was very young then. Do you think that could be the cause of his disinterest in Judaism?

Question
Does riding a bike on Shabbat violate any biblical laws, or only rabbinical? If one has extenuating circumstances that require traveling by some type of vehicle on Shabbat (such as visiting the sick), and a bike can meet that need, would the use of a bike be a lesser violation than driving a car? Or has one equally broken Shabbat?