Touching God's Anointed - 1 Samuel 24

There is no shortage of Scriptures that false teachers rip out of the Bible, twist, and pervert; and 1 Samuel 24 is no exception. In this chapter, we see David having a chance to kill King Saul and move along God's plan for him to become king of Israel, but he doesn't because as he says, he will not touch God's anointed. What does this passage really mean and how are so many false teachers lying about it to push their own demonic teaching?