Davening for One’s Friend:
The Gemara (Gittin 7A) says: “If one has a complaint against his friend and remains silent, Hashem will perform judgment on his behalf.“
The Noam Elimelech (Likutei Shoshana) explains that one must always daven for his friend. This is because one cannot do so much to himself, as “an incarcerated person cannot free himself from prison (Brachos 5B).” However, one can always daven for his friend. Therefore, everyone should daven for others, and this will allow everyone to receive their salvation.
This is the meaning of the statement: “Kol Yisroel arievim zeh lazeh.” The word “areivim” indicates something sweet because every Jew can sweeten the judgments against his fellow Jews by taking responsibility for them and davening on their behalf.
The Noam Elimelech continues to say that the main tefillah is with one’s thoughts, and prayers done in the mind cannot be obstructed by damaging forces. Accordingly, the Gemara is saying that if one sees that his friend has complaints and is in need of help and he is silent, meaning that he davens for him with his thoughts, Hashem will “perform judgment on his behalf”, meaning that He will answer the prayer.
