Abraham

The son of Terah and founder of the Hebrew Nation was a man by the name of Abraham (originally Abram). His family descended from Shem and settled in Ur of the Chaldees (Genesis 11:28), Abraham's home town. Terah was apparently an idolater (Joshua 24:2), but had three sons, Abraham, Nahor, and Haran, one of which would go on to be called by God to create a chosen people. Abraham was married to his half-sister, Sarah (originally Sarai). …

…see the effect it had on his and his children's lives. Abraham is a prominent character in the Old Testament, but in the New Testament there is also a wealth of references to him. Paul calls him not only the father of the Jews, but of all who believe (Romans 4:11), hence the song "Father Abraham." He is thus the archetype of the Christian believer, repeatedly held up as an example of faith at its best.