7 What shall we say then? Is the law sin? Absolutely not! Certainly, I would not have known sin except through the law. For indeed I would not have known what it means to desire something belonging to someone else if the law had not said, “Do not covet.” 8 But sin, seizing the opportunity through the commandment, produced in me all kinds of wrong desires. For apart from the law, sin is dead. 9 And I was once alive apart from the law, but with the coming of the commandment, sin became alive 10 and I died. So I found that the very commandment that was intended to bring life brought death! 11 For sin, seizing the opportunity through the commandment, deceived me and through it I died. 12 So then, the law is holy, and the commandment is holy, righteous, and good.

Rabbi Yehoshua ben Levi said: What is the meaning of that which is written: “And this is the Torah which Moses put [sam] before the children of Israel” (Deuteronomy 4:44)? The word sam is written with the letter sin and means put; it is phonetically similar to the word sam written with the letter samekh, meaning a drug. This use of this word therefore alludes to the following: If one is deserving, the Torah becomes a potion [sam] of life for him. If one is not deserving, the Torah becomes a potion of death for him. And this idea is what Rava said: For one who is skillful in his study of Torah and immerses himself in it with love, it is a potion of life; but for one who is not skillful in his studies, it is a potion of death.