Matthew 25:7

Then shall the kingdom of heaven be likened unto ten virgins, which took their lamps, and went forth to meet the bridegroom.

And five of them were wise, and five were foolish.

They that were foolish took their lamps, and took no oil with them:

But the wise took oil in their vessels with their lamps.

While the bridegroom tarried, they all slumbered and slept.