וישב ראובן אל הבור
Chazal (Midrash Rabbah 24:19) ask: “Where was Reuven that he had to return?” One opinion in the Midrash contends that he was occupied with his sackcloth and his fasting as part of his penance in repenting for the deed concerning Bilhah (when he rearranged his father’s bed). Chazal record Hashem’s response to Reuven’s teshuvah, repentance: Hashem said, “No man has heretofore sinned before Me and repented. You are the first to take the initiative with regard to repentance. By your life, your descendant (Hoshea HaNavi) will one day rise and take the initiative with regard to repentance. (As it says:…