How was Abraham saved—by faith or by offering sacrifices?

Les explains in this unit that God gave Abraham the Abrahamic Covenant, called him out of idolatry, and promised him a separated nation that would be holy and come under the covenant promises. That is why Israel is called the favored nation, or God's chosen people, because in His sovereignty that is the way He ordained it. Les then states that God called Abraham and saved him by faith, plus nothing. Abraham was not saved by offering sacrifices; he was saved by being obedient to what God said, and later the sacrifices came in. He was a man of faith, saved by faith even as we are, plus nothing.