So when the woman saw that the tree was good for food, and that it was a delight to the eyes, and that the tree was to be desired to make one wise, she took of its fruit and ate, and she also gave some to her husband who was with her, and he ate.
Then the eyes of both were opened, and they knew that they were naked. And they sewed fig leaves together and made themselves loincloths.
The serpent's craftiness first planted the seed, grew it, and now it has produced the fruit of disobedience in the lives of the man and the woman. Eve decided to go with her own discernment, rather than heed the Word of God. Adam willfully sinned against the command that God had given him, and failed in his responsibility to be the keeper of his wife.
The desirable fruit certainly did change things for Adam and Eve, but not in the way that they had hoped. Feebly trying to cover their guilt, they clothe themselves in fig leaves. But that would not be enough to hide their shame from their all knowing God. They chose to conform their thinking to the serpent's craftiness, rather than to the truth that the all wise Creator God had laid out for them.
How often do we do the same thing? We choose our own way over God's way, though His is best, and we end up reaping the consequences. Good things are never brought about by sin! Any time we wander away from the truth that God has established, we are always going to be going in a direction that we were never meant to take our lives in. We are wandering away from our privilege of living the way that is God's best for us. Living our lives, studying His Word, making decisions based on His judgment, and walking in His will daily, all while giving the glory back to Him and enjoying Him. We only have the ability to do this when we know His Word, and walk in the truth that He has laid out for us.