The foolish took their lamps, but took no oil (pursued ministry as their priority over getting oil). The wise took oil in their vessels with their lamps (pursued oil as their priority before ministry). At the dark midnight hour of history, the Spirit will raise up forerunners who cry out that Jesus is coming as a Bridegroom God and that we must go out to meet Him (make the necessary effort to encounter Him). They all slept which speaks of living in context to the natural processes of life.