Faith

Hebrews 11v1-3

Now faith is the substance of things hoped for, the evidence of things not seen. For by it the elders obtained a good report. Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.

"The Name and the Faith are terms comprehensive of the whole subject. "There is One Faith," says Paul, "and one Hope of the Calling." 

...when "faith" is used in connexion with "name" it embraces the things associated with it by Paul in his definition of it in Heb. 11 : 1. In this place, he says, "Faith is a hypostasis of things being hoped for, and elegchos of transactions not seen." Here faith, or belief, is said to be hypostasis and elenchos; that is, faith is reality and proof. The person who has it, embraces certain things promised as realities, and certain transactions as things proved. Hence, faith is the assured hope of things promised, the conviction of the truth of transactions not witnessed by the believer."

John Thomas, Eureka (Volume 1), p.284