Musar su Genesi 15:8

Avraham, who was so beloved to his Maker such that scripture testifies of him "Avraham, My beloved" (Isaiah 41:8). Even so, he did not escape from judgment for slight words which he was not meticulous in, namely, for merely saying "with what will I know?" (Gen. 15:8), G-d replied to him: "by your life, you will know that your descendants will be foreigners [in Egypt]" (Nedarim 32a). And similarly for forging a covenant with Abimelech without being commanded by G-d, the Holy One blessed be He, replied to him: "by your life, I will delay the rejoicing of your sons for seven generations" (Gen. Raba 54:5).

For the Creator, blessed be He, who created the evil inclination also created the Torah as its antidote as our sages of blessed memory have stated: "I have created the evil inclination, and I have created the Torah as its antidote" (Kidushin 30b).

So too in our case, for no one recognizes the illness of the evil inclination and its powers except for the Creator who created it. And He Himself cautioned us that the only remedy for it is Torah. Who then will abandon it, take something else instead and expect to live? Certainly the darkness of the physical will advance and strengthen over him level after level, without his realizing it until he finds himself immersed in evil, so distantly far from the truth that even thoughts of seeking [the truth] will not enter his heart.