The word substance is translated from the Greek word 'hypostasis', which means
1) that which has foundation, is firm
a) confidence, firm trust, assurance
The dictionary definition of hope is "a feeling that what is wanted can be had or that events will turn out for the best"
The Bible defintion of hope, translated from the Greek root word 'elpis', means "anticipation, expectation, or confidence".
The word evidence is translated from the Greek word 'elegchos', which means
1) a proof, that by which a thing is proved or tested
What is 'not seen' is that which is not seen with natural eyes; but with spiritual eyes.
We are able to see the world that we live in; and God can enable us to see what is in the spirit - the supernatural.
When we come to believe the Word of God we will see ourselves WITH what He has promised - even with our natural eyes CLOSED.