Man and his conscience: By the fall, Adam and Eve acquired and transmitted to the human race the knowledge of good and evil. This gave conscience a basis for right moral judgment, and therefore the race came under this measure of responsibility to do well and refrain from evil. The result of the dispensation of conscience, from Eden to the flood was that "all flesh had corrupted his way on the earth," that "the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually," and God closed the chapter of the natural man with His judgment by the flood.
Genesis 3:6-7 “So when the woman saw that the tree was good for food, that it was pleasant to the eyes, and a tree desirable to make one wise, she took of its fruit and ate. She also gave to her husband with her, and he ate. 7 Then the eyes of both of them were opened, and they knew that they were naked; and they sewed fig leaves together and made themselves coverings.”
Genesis 3:22-23 “Then the LORD God said, “Look, the human beings have become like us, knowing both good and evil. What if they reach out, take fruit from the tree of life, and eat it? Then they will live forever!” 23 So the LORD God banished them from the Garden of Eden, and he sent Adam out to cultivate the ground from which he had been made.”