The writer is very adament in his views and interpretations of the Tribulation Day. Un fortunately, it reads as though you will go to Hell if you do not accept his views. Sounds like a few "denominations" I have heard before. I really wonder if it matters as to a persons Salvation which they have accepted in their spirit as the true "end of times". There is scripture to support all three options; Pre-millenial, Mid-millenail and post-millenial events. Personally, I do not agree with Mr Vincent on this matter.
In spite of the subject, it is well written and he has many strong points to make for us to consider.