There are spiritual truths that produce physical results. The entire physical realm came out of or originated from the spirit realm. God is a spirit and all things started from "and God said." So if you know how to operate in the spirit realm then you know how to litterally bring things into physical existence. But spiritual truths are sometimes unseen until someone uses their faith to bring them into the physical realm where they can be seen. Because faith is the substance of things. Faith is the substance that brings the spirit realm into the physical realm. A spiritual truth is not based on the senses. For example: Psalms 34:7 The angel of the Lord encampeth about them that fear him and deliver them. Yet in 2Kings 6:15-20 when the Syrian army came to capture Elisha he said "fear not for there's more that be with us than be with them." He said that without seeing a thing. Not being seen does not mean not real. What he said wasn't seen in the physical but is was true in the spiritual. How about the 10 lepers when Jesus told them to go show themselves unto the priest, they went and as they went they were cleansed. Well remember when the centurion in Matthew 8:8 said speak the word only and my servant shall be healed. Well Jesus spoke the word- "go show yourselves unto the priest." The practice at that time was to show yourself to the priest after you've been cleansed so he could pronounce you clean. So Jesus was calling them healed. And as they went inspite of what they saw and felt they received a spiritual truth into their physical bodies. The spiritual truth of speak the word only produced a physical result. Stop trying to change physical problems with physical answers. Let the spirit realm deal with your physical problems. Remember the spirit realm produces the physical realm.