Presently, when her lover comes again, the marriage will finally be consummated. But five of the virgins are wise and five are foolish. Wisdom and foolishness are not relative concepts in the sense that they depict an earthly virtue of lack of it. Wisdom is a heavenly gift of grace which is wrought in the hearts of God's people through the Spirit of Christ, while foolishness is sin and comes from the depraved heart of man. There is always a practical aspect to wisdom.
Wisdom is the ability to adapt one's life to the realities of the world.
The true reality of things is the Scriptural truth that this world will not last forever, but that the day is coming when it will be destroyed. Wisdom is the application of this truth of the Word of God to the specific walk and calling of a man here in this present time. Foolishness is just the opposite. A foolish man also knows the truth. He knows that Christ is coming again.