This book has been written to awaken the Church from a false compacency, and to help to prepae her for the time that Jesus deccribes in Matthew 24.21, as being a time “of great distress, unequalled from the beginning of time until now– and never to be equalled again.”
The tribulation is a reality that the Church must be prepared to face.  Corrie Ten Boom wrote — “There are some among us teaching there will be no tribulation, that the Christians will be able to escape all this.  These are false teachers that Jesus was warning us to expect in the latter days.  Most of them have little knowledge of what is already going on across the world.”
This book needs to be read prayerfully, so that its warning does not produce gloom, but rather an eager appropriation of the Holy Spirit that has been sent from the Father to equip His chilldren for everything that must take place on the earth before our Lord Jesus returns.