What was Adam thinking? Of course, eating the fruit from the forbidden tree was wrong, and he – along with all humankind – was punished as a result. But we would certainly expect that he had some rationale, some thgouht process that justified this action in his mind. What might have led him to eat fruit which G-d had explicitly commanded him not to eat? The Arizal explains the spiritual effects of Adam's sin, how it fundamentally transformed the human being. Before his sin, the Yeser Ha'ra (evil inclination) was external to the person, not part and parcel of his being. Adam was pure and pristine, with a natural inclination to act the right way and do the right thing. Although temptation existed, it could be avoided. A person could keep a distance from sources of temptation, and serve G-d easily, without any inner resistance or inner struggle. After the sin, however, everything became a struggle. As we all know, virtually every good deed we do requires some degree of effort, a "tug-of-war" between our desire to do the right thing and the desire to do the wrong thing. This ongoing struggle was introduced once Adam and Havah partook of the forbidden fruit. This explains Adam's rationale when he decided to eat the fruit that Havah brought him. Imagine a baseball team that shows up ready to play a game, but after the pregame workouts and batting practice, just before the first pitch, the other team decides to forfeit the game. The first team will of course be happy to be credited with a win, but it won't feel very proud of this victory. But if the game is played, and it goes into extra innings, with both teams playing hard, and the game is won in dramatic fashion in the 14 th inning – the team will go home feeling very gratified over its hard-fought win. Adam reasoned that he could draw closer to G-d by inviting the Yeser Ha'ra into his being, by accepting the challenge of perpetual spiritual struggle. Serving G-d without this inner conflict would be like winning via a forfeit, without a fight, whereas serving G-d by constantly resisting lures and temptations would be a hard-fought triumph each and every day of his life. This is what Adam wanted. He strove for greatness, and he understood that greatness is achieved only through hard work and struggle. He thus decided to subject himself to the difficult challenges of the Yeser Ha'ra so he would have to wage a lifelong battle against them. Nevertheless, Adam was wrong. This decision was sinful – so sinful, in fact, that it brought to the world numerous curses, including death itself. The reason why Adam was wrong is very simple – because Hashem told him not to eat the fruit. No human being can ever try to "outsmart" G-d, or think that he has a better idea than G-d had. And no human being can ever think that he can draw close to G-d by disobeying G-d's command. No matter how certain a person is that a certain action will propel him to great spiritual heights and enhance his relationship with Hashem – he must not commit that act if Hashem Himself proscribed it. It is impossible to serve G-d by disobeying G-d. The Gemara teaches that the "Zuhama" ("filth") of Adam's sin remained until the time of Matan Torah, when Beneh Yisrael stood at Mount Sinai and accepted the Torah. They proclaimed, "Na'aseh Ve'nishma" ("We will do and we will hear" – Shemot 24:7), committing themselves unconditionally to G-d's will. They declared their unbridled obedience, that they would observe every command without any hesitation and without rationalization. This corrected the ill that plagued mankind since the time of Adam's sin, the tendency to arrogantly subject G-d's commands to human logic and reasoning. Tragically, however, Beneh Yisrael fell once again just 40 days later, when they worshipped the golden calf. The Ramban and others explain that Beneh Yisrael did not worship they golden calf as a deity. They made a graven image not to replace the Almighty, but rather to replace Moshe, their leader and prophet through whom they served G-d – and whom they had assumed was never returning. Their intentions may have been noble – but they erred by directly disobeying the explicit command not to build an idol for religious worship. Religious observance cannot be diluted or altered to suit our own ideas, our own preferences, or our own perceptions of right and wrong. No matter how convinced we might be that a certain course action is "spiritual" or religiously beneficial, and serves to advance our relationship with G-d, it must not be followed if it violates Hashem's word, if it transgresses the Torah that He gave us. Adam's mistake reminds us that even the noblest intentions cannot justify disobedience. Real Abodat Hashem (service of Gd) begins when we humbly trust His wisdom more than our own.