In Genesis chapter 6, the wickedness of humanity is depicted. As the population expanded on earth and daughters were born, the sons of God noticed the beauty of these women. They chose the ones they desired and married them.Then, the Lord God declared that he would not allow human beings to live forever, for they were mortal. From then on, they would not live more than 120 years.At that time, there were giants on earth, and also later, when the sons of God had relations with the daughters of men and these gave birth to children. These giants were the heroes of ancient times, famous men.