“You knew what i was when you picked me up”

This is a story about a Indian youth which, climbed a mountain to reach the top. And in the top he became free. In a sense he was joyful. Until he heard  a rattle. This rattle was coming from a snake, and this snake asked the Indian Youth, “ I am dying up here can you help me down so i can get warm, and eat.” The Indian youth was very surprised because the snake could kill him. And the snake persuade him saying, “ i'll treat you special and i won't hurt you, please take me down to the valley.” As the Indian youth took him down, and wrap him in his shirt, he placed him down. As he said thank you and bit him. Then the snake said “ You knew what i was when you picked me up”! This is metaphorically speaking that when somebody offers you something bad and keeps telling you that there is no harm, you gotta always choose the right for you and doesn't harm you.  Other examples would be alcohol, drugs, stealing,etc etc. Also the snake represents evil trying to get you into bad things, and you have to stand your ground and say no.