Is salvation in the Age of Grace the same as Abraham's salvation by faith plus nothing?
Yes. Salvation in the Age of Grace is by faith plus nothing, just as Abraham was saved by faith plus nothing. Abraham believed God and did not merit salvation by sacrifices, circumcision, or Law, and believers today are saved the same way, becoming Abraham's spiritual children.
Les explains that Abraham was saved by faith plus nothing: he did not bring sacrifices for salvation, was not circumcised beforehand, and was not under the Law; he simply believed God. Les then applies this to the Age of Grace, saying believers today are also saved by faith plus nothing. This ties believers to Abraham spiritually, not through earthly progeny, making them heirs of the promises and children of Abraham.