The thrust of the parable is that Christ (The Bridegroom) will return at an unknown hour and that His people must be ready. Being ready means preparing for whatever contingency arises in our lives and keeping our eyes fixed on Jesus at all times as we await His coming, and be born again through saving faith in Jesus Christ. As seen in the fact that all the virgins were sleeping when the call came indicates that it doesn’t matter what we are doing when Christ returns. We may be working, eating, sleeping, or pursuing leisure activities. Whatever it is, we must be doing it in such a way that we don’t have to “make things right” (get more oil) when He comes. This would apply to either the coming of Christ for His Church or for the Tribulation saints as they await His second coming.
For just as through the disobedience of the one man the many were made sinners, so also through the obedience of the one man the many will be made righteous. Romans 5:19