According to rabbinical tradition, Isaac was 37 years old at the time of his bound, which contrasts with popular depictions of Isaac as a kid. The rabbis also believed that Sarah's death was caused by the knowledge of Isaac's planned sacrifice. So they said that he was told about it and was devastated by it. Because of this, they stated that God in His mercy decided not to destroy all of humanity, but only Abraham's son Isaac. After this incident, the rabbis concluded that human beings cannot be trusted with the power of life and death. They said that even if someone is willing to sacrifice himself for another, still he could be used by God as a tool against that person's will. Therefore, they declared that no one should have the right to kill even an evil servant. After this, they reported that God made a covenant with Abraham that He would continue to bless all of his descendants forever. And because of this, they stated that God gave every generation its own task that needs to be done in order to fulfill God's promise to Abraham. For example, they said that since Abraham was too old to travel, he appointed his children to go to "the far country" and start a new nation there. After them, their descendants were supposed to spread out across the world.