The Ten Vergins are not the Church they represent the Virgin daughters of Zion. The Jews were to keep their lamps lit to show the every lasting covenant not the Church. It will be the Virgin daughters of ZION that go forth IN THE DAY OF DARKNESS to meet their Lord with their LAMPS Lit! When jesus returns he will be returning from the wedding Luke 12, so then these are not Christians at all! The oil in this parable is not the Holy Spirit. In acts when Simon tried to buy the Holy Spirit he was told it was a SIN to even THINK such a thing. So, no one is going to be able to say that Jesus in a parable is implying that these unwise Virgins can go buy the Holy Spirit. This can not happen and it contridicts all scripture to say that you can buy the Holy Spirit.
This is actually a closer to literal picture of the believing and non believing Jews who will go forth IN THAT DAY. But remember he is returning from the Wedding Luke 12. So, the Church is no longer on earth but returning with Jesus!