ויהי בארבעים שנה... דבר משה אל בני ישראל
Rashi comments, “This teaches us that Moshe Rabbeinu did not rebuke them until immediately before his death.” Rashi continues that Moshe derived this from Yaakov Avinu, who also waited until he was on his deathbed to rebuke his sons. Yaakov said, “Reuven, my son, why did I not rebuke you earlier? It was so that you should not leave me and join up with Eisav, my brother.” This comment begs elucidation. Reuven was a holy person who, for the slightest vestige of sin, sat in sackcloth and fasted for a lengthy period of time. To say that rebuke would drive…