This week's parashah (section) (Ki Tetzé, When You Go Out) is one of those that are, so to speak, filled with mitzvot. In fact, among its 110 verses, there are 74 mitzvot! Therefore, it's difficult to choose one over another to explain, even a single detail. Who are we to limit the Torah to one idea or another? But, obviously, it's not possible to explain everything (in quantity) and in depth (in quality); rather, we must focus on one idea.
This week we read about Amalek. They were a people who lived south of the Land of Israel and who caused suffering to the Jewish people from the time of their exodus from Egypt. While the Torah provides instructions on how the Jewish people should behave toward them, in practice, they no longer exist. Therefore, the mitzvah of erasing their memory takes on a spiritual meaning. In other words, what once meant wiping the Amalekites off the face of the earth now means eradicating them from ourselves.
We find two places in the Torah where it speaks about Amalek. In one (chronologically earlier) it says that Amalek fought against the Jews at Rephidim (the name of a place), while in the other (in this week's parashah) it says that we should remember what Amalek did to us when he appeared (karcha, in Hebrew) on the road.
Our sages explain that the Hebrew word Rephidim is related to rafui, which means soft. This means that Amalek fought against the Jewish people when they "softened" their observance of the Torah and its mitzvot. The word karcha is related to kor, which means cold. In other words, Amalek cooled the Jewish people's interest in their own roots.
From this we can deduce that the expression of Amalek that we all carry within us and that we must eradicate has two stages: first, it cools the person, making them indifferent to Judaism in general. Then, it makes them lax, more lenient, in their observance of the Torah.
It is extremely important that each person analyze, in these days near the end of the Jewish year, how they have been affected by Amalek so far and make a strong resolution, in the coming year, to fight against that influence.