Abraham embodied living by faith. Through perpetually living in a tent, he demonstrated his complete trust and reliance upon God.
The Scriptures place a paramount importance on sacrifice. Abraham's 'sacrifice' of Isaac confirmed him to the position of father of the faithful.
Abraham, the father of the faithful, did not have a blind faith; it was based upon observation of God's proven track record of faithfulness.
The name Isaac—'laughter'—suggests his optimistic disposition, someone not afflicted by fear and doubt. Isaac serves as a type of Christ, honoring his father.
Hebrews 11 provides examples to bolster faith. The faith described is not blind, but is carefully developed from systematic analysis of available evidence.
God helps us to overcome our problems in an unraveling process, sometimes taking us back through the consequences of the bad habits we have accumulated.