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. And at midnight there was a cry made, “Behold, the bridegroom cometh; go ye out to meet him.” Then all those virgins arose, and trimmed their lamps. And the foolish said unto the wise, “Give us of your oil; for our lamps are gone out.” But the wise answered, saying, “Not so; lest there be not enough for us and you: but go ye rather to them that sell, and buy for yourselves.” And while they went to buy, the bridegroom came; and they that were ready went in with him to the marriage: and the door was shut.
Afterward came also the other virgins, saying, “Lord, Lord, open to us.” But he answered and said, “Verily I say unto you, I know you not.”
Watch therefore, for ye know neither the day nor the hour wherein the Son of Man cometh.                  Matthew 25:1-13

Without being too complicated, and I do not believe Jesus intended the understanding of this parable to be hard to understand; I will keep this short and simple without trying to explain every item within it. There is one simple message to the parable of the ten virgins. I will state it in one sentence.

The Lord Jesus is coming again for His bride, which is the Church, and if an individual does not have the Holy Spirit abiding in them, they will not make it.

If you are not ready with the Holy Spirit in you (Romans 8:9) then you will find yourself standing outside the door of the Savior crying “Lord, Lord” and He will not let you in. You receive the Holy Spirit by repenting of your sin, calling on the name of Jesus as your Lord and Savior in faith, knowing that He died on the cross for your sins, He was buried, and He rose again. Call on Him today.