Faith is the substance of things hoped for...

“Faith is the substance of things hoped for”: as the marginal reading of the R.V. suggests, “giving substance to.” Crediting the sure testimony of God, resting on His promises, and expecting the accomplishment of them, faith gives the object hoped for at a future period, a present reality and power in the soul, as if already possessed; for the believer is satisfied with the security afforded, and acts under the full persuasion that God will not fail of His engagement. Faith gives the soul an appropriating hold of them. “Faith is a firm persuasion and expectation that God will perform all that He has promised to us in Christ; and this persuasion is so strong that it gives the soul a kind of possession and present fruition of those things, gives them a subsistence in the soul by the first-fruits and foretastes of them; so that believers in the exercise of faith are filled with joy unspeakable and full of glory”

(Matthew Henry).