Many religions have different rules, different beliefs, different traditions. In fact, that's what makes them all different. Essentially the one thing any religion has in common is they all "abide by" a higher power. That higher power ranks from a God-like persona, all the way to your elders. Respecting your parents and trusting that they'd teach you the ways of your clan's laws is how human civilizations have operated for years.
Some make more sense than others, some beliefs and morals are outright outrageous. And though this is actually the fault of people- not so much a scripture- every religion has a set group of extremists. People who totally misunderstood the readings from a book, it's probably the biggest fault in human history to this day. Such was the case for Muslim extremist/confused teen, Adil Rashid. He is an 18-year-old man from Birmingham, UK who was recently spared jail for having sex with a 13-year-old girl he met on Facebook. The reason for his "pass go and collect $200?" freebie? He claimed he did not have a proper education.