This Parashah contains the Divine precept to love one's neighbor as oneself. Rabbi Akiva states regarding this: "It is a principal rule of the Torah." Rabbi Israel Baal Shem Tov established this commandment as one of the pillars of the movement he founded, the Hasidic movement.
Rabbi Levi Yitzchak of Berdichev was known for the intense Ahavat Yisrael, love for another Jew, that burned in his heart. He even earned the title of "advocate for the Jewish people." Rabbi Levi Yitzchak revealed that this vision and attitude took root in him as a result of a special teaching he received from his teacher, Rabbi Israel Baal Shem Tov.
This teaching is about the Mishnah of Pirkei Avot (Chapter 2, Mishnah 2), which states: "All Torah study that is not combined with work will cease." The Baal Shem Tov explained that "work" refers to dedication in the love of one’s neighbor. For Torah to have a foundation, it must be combined with the love of Israel. The emphasis is on the term "work,” meaning that fulfilling this precept should become an occupation, to which one should dedicate oneself similarly to a professional in their field, or a merchant to their work. Just as a vendor doesn’t sit at home waiting for someone to learn about their merchandise and come to buy it, but rather opens a business in a strategic location, hangs a sign on the door, and invests all their energy in promoting their goods through various means, so that people will come and purchase them.
Similarly, we must be concerned with loving our neighbor. We shouldn't wait until our fellow human being comes to us and asks for help, but rather we should think about and find ways to help them, find out what they need, both materially and spiritually, and dedicate ourselves wholeheartedly to meeting that need. This is the right way to "work" in loving our neighbor.
The Baal Shem Tov taught that the way to bring another Jew closer to the spirit of the Torah and the Mitzvot is by doing him a good deed on the material plane.
In addition to fulfilling the precept of loving one's neighbor, this causes in the spirit of our neighbor an approach, even turning him into a vessel for spirituality.
When doing good to another, there should be no hidden motive; the favor should be done unconditionally, as material help also brings the recipient closer to the spiritual realm.
Perfection in the mitzvah of Ahavat Israel is achieved when the partner is fully consolidated until he himself can help others.
Likewise, on the spiritual plane of fulfilling the Torah and its precepts, when we have succeeded in making our companion able to transmit and help others, then we have achieved excellence in this Mitzvah.
Some argue that they don't feel capable of teaching others. They should know that this isn't the case. Our Sages tell us in Pirkei Avot: "Who is wise? One who learns from everyone." Therefore, everyone possesses something unique, and this they can transmit to others. At that point, they are "rich" and should help by sharing it with others.
When a Jew helps or teaches his neighbor, the verse from Mishlei, "God enlightens the eyes of both," is fulfilled with both of them; the Almighty bestows upon both the giver and the receiver an endless number of blessings from Heaven.
Likutei Sichot, Volume 1 Page 260