“When you come to the Land and plant any food tree, you shall treat its fruit as orlah; for three years it shall be orlah to you, they shall not be eaten.” 

[Vayikra 19:23] The halacha is that if one plants a tree and the tree produces fruit during the first three years of its growth, those fruits are forbidden to be eaten. They are known as “orlah”.
Adam could not wait. It was for the best of reasons, but he did not wait. He ate from the tree prematurely and unfortunately, the world changed forever for the worse. the
Brisker Rav once officiated at a wedding during which the ring fell into the grass as it was about to be slipped onto the bride’s finger, completing the marriage ceremony.