This document provides an overview of the first introduction of salvation and redemption in Genesis 3:20-21. It describes how Adam became a believer in God after being deceived by Satan and exercised faith in God's promise that Eve's offspring would defeat Satan. God made coats of skin for Adam and Eve, representing the first sacrifice and foreshadowing of Jesus' sacrifice to cover mankind's sin. The document examines how salvation requires faith from man but atonement from God's side through the substitutionary death of an innocent victim to cover sin.