7. How did human life go downhill very quickly after this? Genesis 4:8.
NOTE: ‘Satan, who is the father of lies, deceived Adam, telling him that he need not obey God, that he would not die if he transgressed the law. But Adam fell, and by his sin he opened the floodgates of woe upon our world. Again, Satan told Cain that he need not follow expressly the command of God in presenting the slain lamb as an offering. Cain obeyed the voice of the deceiver; and because God did not accept his offering, while He showed His approval of Abel’s offering, Cain rose up in anger and slew his brother.’ Evangelism, page 598.
8. Did the problem stop there? Genesis 6:5, 12; Romans 3:23.
NOTE: ‘In sparing the life of Cain the murderer, God gave the world an example of what would be the result of permitting the sinner to live to continue a course of unbridled iniquity. Through the influence of Cain’s teaching and example, multitudes of his descendants were led into sin, until “the wickedness of man was great in the earth” and “every imagination of the thoughts of his heart was only evil continually.” “The earth also was corrupt before God, and the earth was filled with violence.” Genesis 6:5, 11. In mercy to the world, God blotted out its wicked inhabitants in Noah’s time. In mercy He destroyed the corrupt dwellers in Sodom. Through the deceptive power of Satan the workers of iniquity obtain sympathy and admiration, and are thus constantly leading others to rebellion. It was so in Cain’s and in Noah’s day, and in the time of Abraham and Lot; it is so in our time. It is in mercy to the universe that God will finally destroy the rejecters of His grace.’ Great Controversy, page 543.