By faith Abraham obeyed when he was called to go out to a place which he was to receive as an inheritance; and he went out, not knowing where he was to go. Hebrews 11:8
What does it mean to live by faith? Dr. Lloyd-Jones examines the significance of Abraham's relationship with God, and our trust in the one true king, Christ Jesus.
http://www.oneplace.com/ministries/living-grace/listen/by-faith-abraham-244977.html#Download