When a Yid has the proper emunah in the Torah and mitzvos that we have been given, he battles with himself to execute those mitzvos properly, in the proper spirit. When Purim comes, he reconciles even with people with whom it is hard to get along. He exhibits humility, he gives a gift, he writes a letter, and he calls the person to ask him for forgiveness. “Let’s turn over a new page....”
And if we perform this mitzvah in the proper spirit down here, this will open the conduits of shefa Above. It says in sefarim that לרעהו משלוח מנות איש refers to מלחמה ה’ איש, the Ribbono shel Olam Himself Who gives us the gift of mishloach manos. When we give an especially difficult mishloach manos, the Ribbono shel Olam will give us shefa even when it’s “difficult,” as it were.
