Adam, Eve and the Forbidden Apple

When I was a child, my mother told me that Adam, and Eve ate the forbidden Apple and thus fell down from the Kingdom of God to the earth. But, I never understood it.  Srimad Bhagavatam 2.9.1 explains it:

The answer is that the Lord clearly wishes that every living entity be in his pure consciousness as a part and parcel of the Lord and thus be engaged in the loving service of the Lord as he is constitutionally made; but because the living entity is partially independent also, he may not be willing to serve the Lord, but may try to become as independent as the Lord is. All the nondevotee living entities are desirous of becoming equally as powerful as the Lord, although they are not fit to become so. The living entities are illusioned by the will of the Lord because they wanted to become like Him. Like a person who thinks of becoming a king without possessing the necessary qualification, when the living entity desires to become the Lord Himself, he is put in a condition of dreaming that he is a king. Therefore the first sinful will of the living entity is to become the Lord, and the consequent will of the Lord is that the living entity forget his factual life and thus dream of the land of utopia where he may become one like the Lord. The child cries to have the moon from the mother, and the mother gives the child a mirror to satisfy the crying and disturbing child with the reflection of the moon. Similarly, the crying child of the Lord is given over to the reflection, the material world, to lord it over as karmī and to give this up in frustration to become one with the Lord. Both these stages are dreaming illusions only. There is no necessity of tracing out the history of when the living entity desired this. But the fact is that as soon as he desired it, he was put under the control of ātma-māyā by the direction of the Lord. Therefore the living entity in his material condition is dreaming falsely that this is "mine" and this is "I." The dream is that the conditioned soul thinks of his material body as "I" or falsely thinks that he is the Lord and that everything in connection with that material body is "mine." Thus only in dream does the misconception of "I" and "mine" persist life after life. This continues life after life, as long as the living entity is not purely conscious of his identity as the subordinate part and parcel of the Lord.

In his pure consciousness, however, there is no such misconceived dream, and in that pure conscious state the living entity does not forget that he is never the Lord, but that he is eternally the servitor of the Lord in transcendental love.