After taking on traditional interpretations of Romans in The Mystery of Romans, Nanos now turns his attention to the Letter to the Galatians. A Primary voice in reclaiming Paul in his Jewish context.

Nanos challenges the previously dominant views of Paul as rejecting his Jewish heritage and the Law. Where Paul's rhetoric has been interpreted to be its most anti-Jewish, Nanos instead demonstrates the implications of an intra-Jewish reading.

He explores the issues of purity, insiders/outsiders; the character of "the gospel"; the relationship between groups of Christ-followers in Jerusalem, Antioch, and Galatia; and evil-eye accusations.