Faith is confidence in what we hope for and assurance about what we do not see. This is what the ancients were commended for. By faith we understand that the universe was formed at God’s command, so that what is seen was not made out of what was visible.
Consequently faith comes from what is heard, and what is heard comes through the preached word of Christ.
By faith Noah, when he was warned about things not yet seen, with reverent regard constructed an ark for the deliverance of his family. Through faith he condemned the world and became an heir of the righteousness that comes by faith.