Are we in the Age of Grace saved the same way Abraham was, by faith plus nothing?
Yes. Abraham was saved by faith plus nothing, without sacrifices, circumcision, or Law, and those in the Age of Grace are saved by faith plus nothing. This ties believers spiritually to Abraham as children of Abraham, not through earthly progeny.
Les teaches that Abraham was saved by faith plus nothing: he did not bring sacrifices for salvation, was not circumcised before salvation, and was not under the Law. He simply believed God. Thus Abraham became the first to really be saved by faith plus nothing. Les then applies this to the Age of Grace, saying believers today are saved by faith plus nothing. This ties believers to Abraham, not through earthly progeny, but only in the spiritual realm do they become the children of Abraham. As soon as a person believes the Gospel, he is one in Christ, in the Body, and an heir of the promises made to Abraham, which went beyond the Nation of Israel. Rich or poor, black or white, east or west makes no difference.