The pattern is clear that we will go through the Tribulation. God Can and Will preserve the Righteous even Through the Tribulation, and they will be unharmed . 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 . But there will be some Christians which will NOT have enough OIL in their vessels, they are called the 5 Foolish Virgins.
OIL can also mean a Preparation.
I think it is safe to say that Half of all Christians are looking to be raptured out of the Great Tribulation. The Church will be very surprised to find that there is NO Pre-Trib. or Mid Trib. They will perish and not make it because it will be such a terrible Tribulation as never seen before. They are called the Overcomers.