The Torah forbids the nazir to drink any intoxicating liquor or any beverage derived from grapes, even if it contains no alcohol. He may not even eat fresh or dried grapes. The prohibition includes water in which grapes had been briefly soaked, even if only a mere hint of the grapes had been present in the water. Chazal infer from this concept that the taste of a food is regarded as representative of the food itself, or the taste is like the substance. In the Talmud Nazir 37b, Chazal also derive from this pasuk that when a half-measure of permitted food is added to a half-measure of a forbidden food, the product is transformed into a whole measure of forbidden food. This process is described as the permitted is subsumed by the forbidden.
The Noam Elimelech asserts that these two conclusions allude to two moral principles. From the halacha of rehgf ogy, we learn that the mere taste of a sin, associating oneself even in thought, is considered contact with the sin itself. Indeed, in the area of morality, thought is the precursor of active sin. From the second halacha, we may conclude that if someone mixes money acquired from an honest commercial transaction with funds derived illegally, the entire enterprise becomes illicit.
Our relationship with others must reflect the loftiest level of veracity. Any alien tinge of an odious nature will compromise that relationship. As members of Klal Yisrael, we must be morally impeccable in every aspect of our lives. By seeking to maintain the hallmark of kedushah, holiness, we can aspire to the designated status of holy nation.