Like Moses leading Israel in the wilderness with the assurance that God would give Israel the land of Canaan. Like us being assured that our sins have been forgiven and destroyed through the blood of Jesus. Faith is steadfastness in the refusal to forsake God. Like the Christians who were physically persecuted in the New Testament. Like our maintaining devotion to Christ when family and friends oppose and discourage that devotion.
Faith is commitment.
Like Paul's commitment to teach people about Jesus. Faith is fidelity to God, being true to God regardless of circumstances. Faith also involves some paradoxes. A paradox involves two statements, two expressions in a concept, that are contradictory yet true. It would appear that if one is true the other would have to be false.