The document discusses how Abraham and David were considered righteous by God because of their faith, not their works. It provides examples from Genesis of how Abraham believed God and it was counted to him as righteousness before he was circumcised. Likewise, David was forgiven of his sins and considered righteous based on faith alone rather than works. The document emphasizes that salvation comes through faith in Jesus Christ as a gift from God, and not by works or deeds, so that no one can boast.