Is salvation in the Age of Grace the same as Abraham's salvation?
Yes. Abraham was saved by faith plus nothing: he believed God, brought no sacrifices, was not circumcised for salvation, and was not under Law. In the Age of Grace, believers are likewise saved by faith plus nothing, making them spiritual children of Abraham and heirs of the promises.
Les teaches that Abraham was saved by faith plus nothing. Abraham did not bring sacrifices for salvation, was not circumcised before he could have salvation, and was not under the Law. What did he do to merit salvation? He believed God. That is all. Abraham became the first to be saved by faith plus nothing. In our Age of Grace, salvation is also by faith plus nothing. This ties believers to Abraham, not through earthly progeny, but only in the spiritual realm do we become the children of Abraham. As soon as we believe the Gospel, we are one in Christ, in the Body, and heirs of the promises made to Abraham, because Abraham's promises went beyond the Nation of Israel. That is where the connection comes in.