Controversy on the beliefs of Scientologists come mainly from an ignorance of what Scientologists believe. In fact, many religions and Scientology have beliefs in common, this includes Christianity, Buddhism and Islam.
Will Smith, in the video below, says that the ideas of the Bible are 98% the same ideas of Scientology, Hinduism, etc.
One of the beliefs that Christians and Scientologists share is that people should be treated with respect and kindness. This extends to several things a person should and should not do.
The Bible in Exodus 20:1-17 (The Ten Commandments) says:
“You shall not murder.”
“You shall not commit adultery.”
“You shall not steal.” and
“You shall not bear false witness against your neighbor.” among others.
Similarly, L. Ron Hubbard wrote in his book The Way to Happiness:
“Do Not Murder”
“Don’t Be Promiscuous”
“Do Not Steal”
“Seek to live with the truth… Do not bear false witness” among others.
As you can see these are almost identical teachings. Scientologists and Christians (and those of many other religions) have a lot of beliefs in common.