or
2. Bring on a technical cofounder, and explicitly divide your company between you.
or
3. Learn to code.
If you need one, I could name a half a dozen great ideas off the top of my head. I think most entrepreneurs could. The bottom line is, if you want to build a business, you are going to have to trust somebody sometime.
Finding a coder who can solve the bizdev rubicks cube is as rare as a bizdev guy who can build an MVP on his/her own.
TL;DR no freelance coder is going to be able to execute both the code and the business plan, so don't worry. If they were that good, they'd already be rich and wouldn't be soliciting freelance gigs.
Companies are 10% idea and 90% execution. You could probably post the idea here and nobody would steal it, just because it's so much work to develop a company, and if it got big you would Winklevoss them.