Because I am not versed in the ancient view of the Law, neither as a Greek nor as a Jew, I find Paul's reasoning through most of this chapter to be tortuous. Poor Abraham. All of creation seems to ride on him and his legacy. Yet all that convoluted rhetoric leads to the culmination of the chapter
23 Now before faith came, we were imprisoned and guarded under the law until faith would be revealed. 24Therefore the law was our disciplinarian until Christ came, so that we might be justified by faith. 25But now that faith has come, we are no longer subject to a disciplinarian, 26for in Christ Jesus you are all children of God through faith. 27As many of you as were baptized into Christ have clothed yourselves with Christ. 28There is no longer Jew or Greek, there is no longer slave or free, there is no longer male and female; for all of you are one in Christ Jesus. 29And if you belong to Christ, then you are Abrahamís offspring,* heirs according to the promise.
It is SOOOO tempting to add the gay/straight polarity to the list in v. 28. That certainly is how I think of it. I think that Paul is saying that all those facile distincitions that we make so much about are washed away in baptism. I can't think of any opposites that were more entrenched in Paul's world than slave/free, Jew/Greek, male/female. That's why I think that ALL divisive distinctions, including gay/straight, are likewise washed away. We are no longer subject to human disciplinarians who wag their fingers and say, "No, you can't love that person. We've never done it that way before." We are all one in Christ Jesus. It says so right in the Bible!