Have you ever heard in regard to a story or proposition that someone ‘bought it’ or ‘didn’t buy it’? You know what was meant by this, and you also know that no money changed hands. Yet this monetary metaphor is widely used to describe the acceptance or rejection of an idea. This is consistent with the concept of being invested in an idea. In a parallel to monetary investments, the ideas you are invested in are a form of wealth. You are careful in how you spend your money, and look for value. You should do the same thing with the ideas you accept. Lay up your treasure in heaven.
Related Resources:How to Hear God's Voice!