Through whom would all families of the earth be blessed?
Through Abraham. Scripture records that as faith was imputed to Abraham for righteousness, God promised that through him all the families of the earth would be blessed. This promise forms the Abrahamic covenant, which later narrows to the offspring—the seed of the woman, who is Christ.
Les explains that Paul stipulates that as Abraham believed God, so are we. Faith was imputed to Abraham as righteousness, and through him all the families of the earth would be blessed. Les then connects this to Genesis 3, where God promises a Redeemer through the woman, the seed who is Christ. The Abrahamic covenant builds on that promise, showing that through Abraham and his offspring, the seed of the woman would come. So the blessing to all families comes through Abraham and ultimately through Christ, the promised seed.