"Among the many things that need to be said about the gospels is that we gain nothing by ignoring the fact that Jesus chose twelve male apostles. There were no doubt all kinds of reasons for this within both the symbolic world in which he was operating and the practical and cultural world within which they would have to live and work. But every time this point is made – and in my experience it is made quite frequently – we have to comment on how interesting it is that there comes a time in the story when the disciples all forsake Jesus and run away; and at that point, long before the rehabilitation of Peter and the others, it is the women who come first to the tomb, who are the first to see the risen Jesus, and are the first to be entrusted with the news that he has been raised from the dead. This is of incalculable significance. Mary Magdalene and the others are the apostles to the apostles. We should not be surprised that Paul calls a woman named Junia an apostle in Romans 16.7. If an apostle is a witness to the resurrection, there were women who deserved that title before any of the men."
An excerpt from Women’s Service in the Church: The Biblical Basis by N.T. Wright