Now that he sees a man of equal strength die beside him, he feels the need to no longer be mortal. After a long journey, he is sent to the bottom of the sea to find a strange flower that will give him eternal youth. He finds the plant and comes to the surface, but right after he falls asleep. When he wakes up, he sees a snake changing its skin, now knowing that the last opportunity to be immortal has been eaten by a snake. This part has something in common with one of our most read books, the Bible. In the First Testament the origin of our species is explained and the reason we don't live forever is that Adam, the first man on Earth, ate the forbidden fruit after being pushed by a serpent. They tell because in both stories there is a special fruit of a plant that promises eternal life, or takes it away. The serpent is also present in both stories, with the difference that in the Bible, the serpent wants Adam to eat the fruit so that his immortality disappears, and that on Gilgamesh, the serpent becomes immortal after eating the promising fruit.