“But if the gospel is true, it does not matter who you are or who you were. You may be a spiritual and moral outcast, as marginal as the single, barren woman was in those ancient days. It does not matter. You will bear fruit, the kind that lasts. The gospel says: Grace is not just for fertile Hagars, but for barren Sarahs. If Sarah can havea future, anyone can! In fact it goes deeper even that this, because Paul is saying that the gospel of grace is especially for hte barren. The able and the ‘fertile’ think they can attain without God, and so they reject the gospel of grace … The gospel shows us that it is the ‘strong,’ moral, good, religious, and self-righteous who, in the end, are the slaves.”—Tim Keller
