This article focuses on the last book in a twelve book series. It is a serious case of taking something out of context.
Now before rash condemnation of the series based upon what happened in the last book; perhaps you should consider what happened in the other eleven.
The series begins with all believing Christians disappearing. They leave behind fillings, artificial joints, and clothing. This is clearly a miracle and convinces many they were wrong to ignore Christianity.
These new Christians soon begin to endure horrible persecution at the hands of a one world government dominated by the antichrist.
Everyone must go to "motivation centers" where they have the choice of beheading or accepting the number of the beast.
A series of miracles occurs, leaving little doubt to anyone that Christ is the son of God. Yet many still reject him.
By the end of the series, almost every major character is dead at the hands of the antichrist and his minions. The believers are cornered, surrounded by the army of the antichrist (at that point, the devil incarnate).
This is when Christ appears and saves the believers by destroying the antichrist's army. The carnage described is the final battle between good and evil. This came after the sides had been clearly identified and everyone knew what they were getting into.