Prelude
There are several things you must know before we plunge into the Tribulation. First, most of the things in the Tribulation are not going to just suddenly occur. God has spent thousands of years preparing the scientific, political, social, economic, and other conditions necessary for these things to occur. He is still doing so now and will continue to move our world toward the events of the Tribulation. The Tribulation will be the culmination of things which have been developing for thousands of years.
The Antichrist, false prophet, two witnesses, and, probably, 144,000 virgin, Jewish males along with all the other principle actors of the Tribulation are already on the Earth, are being prepared for their rolls in the Tribulation, and are being moved towards their starting positions on the stage of life. Soon, a curtain call from Jesus,"Come up here!" will be given, a curtain of born again christians will rise, and the most terrible play in the history of the world will begin.
Second, these prophesies are predictions given to us by God about the things He will cause to occur. They will happen as He said and cannot be stopped because God is all powerful, all knowing, and cannot be wrong or stopped. There are those, even "christians", who believe we can stop God's snow ball from rolling to where He said it will roll and doing the damage He said it would do. Their efforts will fail.
Another thing you must understand about the judgments of the Tribulation is that they are not simplistic, singular events which will occur in a linear manner as the false prophets tell you. The judgments mentioned are the beginning of events and the effects of those events which will continue to cumulate throughout the Tribulation and last until the end. Each judgment adds to prior judgments or, in some cases, is the culmination of a prior judgment. Like snow falling, each new flake makes it deeper. In other words, the Tribulation will be far worse than anything described by any false prophet who prophesies for money.
The judgments are listed as seven seals, seven trumpets, and seven bowls with several parenthetics or lists of other events which will occur during the Tribulation. Contrary to what some "prophets" tell you, all of the judgments are in chronological order. The parenthetics are events which occur in parallel or at the same time with the judgments. There are two trains of thought running parallel to each other.