Let’s take that closer look at
Hebrews 11:1 — Faith is the substance of things hoped for, the evidence of things not seen.
What do we see here? Faith is substance. It is the tangibility of those things you hope for. If you have faith, your hope is within reach. It is the evidence of things not seen. Hmm. We live in a physical world, although we are spirit. God breathed into man His spirit and gave us life. So while there is a lot of activity around us in an invisible world– between angels and demons, fighting over us, over our souls — we still live in a physical world. Adam and Eve were placed in the Garden of Eden, told to tend and keep it. Even after being evicted they were told to till the ground. So there is the physical and there is the spiritual.
The spiritual realm is the invisible realm and all things are there. Through our faith we can pull those things into existence here. Realize that God is the Creator. We do not create. But with faith we have the substance and the evidence of something that we do not have in the physical, something that we hope for, something that we can not see.