“But you, Daniel, shut up the words and seal the book until the time of the end. Many shall run to and fro, and knowledge shall increase.” Daniel 12.4
Since the time of Daniel, there has been a suspense about the end of times. But the Lord Jesus revealed to John. What is written in the book of Revelation is what will happen. But even with advanced science, many of the symbols contained in Scripture are not understood. It takes discernment and enlightenment of the Holy Spirit.