Without having this mark or number, you'll be unable to buy or sell anything. Whatever you do, don't take this mark, number, or name. Even if they torture you do not take the mark. It's the same as giving your soul to Satan, and there is virtually no hope for you once you do. During the Tribulation God Pours his wrath on the earth.
Peace is taken from the earth, and men slay each other.
There's a great famine, food will cost a days wages. According to the web sites I have browsed. There are an estimated 6 billion people, living on the earth. It would kill an estimated 1.5 billion people. People in heaven who were executed by the Antichrist now ask Jesus how long till he avenges them.