Stop me when you know what famous book this is:
A young kid growing up in an oppressive family situation suddenly learns that he is one of a special class of children with special abilities, who are to be educated in a remote training facility where student life is dominated by an intense game played by teams flying in midair, at which this kid turns out to be exceptionally talented and a natural leader. He trains other kids in unauthorized extra sessions, which enrages his enemies, who attack him with the intention of killing him; but he is protected by his loyal, brilliant friends and gains strength from the love of some of his family members. He is given special guidance by an older man of legendary accomplishments who previously kept the enemy at bay. He goes on to become the crucial figure in a struggle against an unseen enemy who threatens the whole world.If you said Harry Potter, you're right. But if you said Ender's Game . . . you're also right. This quote is from an article Orson Scott Card wrote, berating J.K. Rowling for this one time she got mad at someone for "stealing" her ideas.
Guys, you can't NOT steal ideas.
Don't believe me? Visit TV Tropes for like two seconds (if you dare). Such a site wouldn't even exist if the tropes listed there hadn't been done time and time again. Not because people are unoriginal, but because we are original, but that does not mean what you think it means.
Being original means we all take the same raw materials -- life -- and turn it into something unique. But it's because of those common raw materials that we all come up with chosen ones and special powers and wise old mentors and unlikely leaders. Because those are the things that move us.
Don't worry about someone stealing your idea, and don't worry about stealing someone else's. Ideas cannot be copyrighted and no one can win a lawsuit because you also made references to the Bible. If they could, the Tolkien estate would own Hasbro by now, and C.S. Lewis's benefactors would have a number of things to say to that guy who tried to sue Assassin's Creed.
Keep moving forward, taking people's ideas and letting people take yours. It's all good, and it'll come back around anyway. Because the goal is not originality or even money. The goal is to show people old things in a new way.