In a recent scholarly article, Phyllis Zagano thoughtfully draws out the theological implications of her research, but her main point is historical: There is simply no precedent on which to base the exclusion of women from the diaconate in the Catholic Church.
Zagano continues: The most famous example of a woman deacon comes from Scripture. In fact, the only person in Scripture called “deacon” is named in Paul’s Letter to the Romans, where he addresses the deacon—the woman deacon—Phoebe.