The Lord God said to the serpent, Because you have done this, cursed are you among all animals and among all wild creatures; upon your belly you shall go, and dust you shall eat all the days of your life. I will put enmity between you and the woman, and between your offspring and hers; he will strike your head, and you will strike his heel." To the woman he said, I will greatly increase your pangs in childbearing; in pain you shall bring forth children, yet your desire shall be for your husband, and he shall rule over you." And to the man he said, Because you have listened to the voice of your wife, and have eaten of the tree about which I commanded you, You shall not eat of it, cursed is the ground because of you; in toil you shall eat of it all the days of your life; thorns and thistles it shall bring forth for you; and you shall eat the plants of the field. By the sweat of your face you shall eat bread until you return to the ground, for out of it you were taken; you are dust, and to dust you shall return." (Genesis 3:14-19)
I don' t see anything which might qualify as a curse of original sin to be handed down to all of Adam' s descendants. Their lives are supposed to become much more difficult than what they had heretofore experienced, but where in all of that is the sin being passed along? Where is there any indication that this sin must be redeemed eventually by Jesus?
The first mention of the concept of original sin is found in the fifth chapter of Romans, written by Paul. According to Paul, humanity was cursed because Eve sinned when she ate of the tree of the knowledge of good and evil. But where is the basis to be found for them in Genesis?