The story of Abraham is found in the book of Genesis in the Bible. He was a man who lived in Ur of the Chaldeans, but God called him to leave his homeland and journey to a new land that God promised to show him. Abraham obediently followed God's command and became the father of many nations. He faced many trials and tests of faith along the way, including being asked to sacrifice his son Isaac, but he remained faithful to God throughout his life.