Abraham was an Old Testament figure who demonstrated biblical faith [Hebrews 11.1] throughout his whole life. He was called by God to leave his homeland to go to a distant country, he waited on God to fulfill His promise of a son, and he trusted in God enough to voluntarily sacrifice that same son to Him. Throughout all of these circumstances, Abraham clung to what was unseen, and his perseverance and trust in God influenced the course of human history as a result.