Parashat Vayeshev tells of Yosef's brothers' hatred toward Yosef, which resulted in their casting him into a pit when he approached them as they shepherded their herds in Shekhem. The brothers initially decided to kill Yosef directly, but Reuven, the oldest of the brothers, persuaded them to cast him into a pit, instead, with the intention of later rescuing Yosef from the pit. Thereafter, however, the brothers decided to sell Yosef to passing merchants, and thus when Reuven returned to the pit, he discovered that Yosef was not there (37:29).