The only way? I don't remember ever hearing this doctrine. I've always been under the impression that savings, wise investments, and staying out of debt are also part of the plan.Yeah. Those three things are common sense, and any finance person will tell you that. It's like the fitness guru who sells weight loss pills. As long as you combine diet and excercise with them, they're guranteed to help you lose weight. Of course, you can also lose weight if you diet and excercise without buying the pill.
Last I checked, the gospel encompasses all truth. Do you not understand the promise in Malachi 3? You have to actually be doing something in order to be blessed. You can't just sit around on your duff after paying tithing and expect to reap temporal blessings.