You can, however, begin to understand the statement "faith is the substance of things hoped for and the evidence of things not seen" by getting a clearer idea of what "substance" means. The word substance is consists of two parts. Sub means "under or foundation," and stance means "to stand." Putting the two parts together we see that substance means "that which stands under."
Many physicists agree that all things consist of one primal material that is the foundation of everything. This primal material is what the Bible calls "substance."
Now when you hope for something, your thought duplicates itself in an invisible pattern of substance. This gives credence to the idea that faith is the substance of things hoped for. The more you think about what you hope for, the more substance is attracted to that form. Eventually, this accumulation of substance reaches a threshold, and it emerges in the form of an experience or an object in your life.
This explains how holding an idea in your mind will eventually materialize in your life. Thoughts are things. This sounds good in principle but there is a down side. Faith can work for you or against you. I will tell you about this next time.