Christian Healthcare Insurance?

Hi again, friends! I have recently been researching some Christian Healthcare Insurance companies. These are ministries where you invest your monthly share, it goes to help folks in need, and then when you need medical help, the ministry can help you pay your medical bill. I am interested in your feedback. Have you ever worked with a company like this? What were your pros/cons? Please kindly weigh in on this issue WITHOUT NAMING THE COMPANY. I'd really like to know what you think on the following three issues: 1. Is there a need for another additional insurance if one chooses to go with one of these plans? 2. How much would you save to cover all of the things these plans do not cover (deductible, well care, maintenance care, pre-existing conditions, etc)? 3. Do you consider this insurance biblically sound? Why or why not? Thanks for your feedback.