We cannot see

We cannot see the perfume of a flower, yet the perfume is there just the same. We cannot see our own dense atmosphere, yet a hurricane will uproot a forest in a short space of time. We cannot see magnetism nor electricity, yet it is the coalescing of these two unseen forces in nature that causes all combustion and flame. We cannot see spirits in our usual state, yet we often feel them as well as other spirits or angels. We cannot see and hear spirits, yet that does not alter the fact that they are with us just the same.