According to our tradition Abraham went through ten tests and some say the final test was the passing of Sarah. What was particularly testing about Sarah’s death? The Midrash teaches that as a result of the Aqedah, the binding of Isaac, Sarah passed away – the episode was so traumatic that it killed her. To suffer is always difficult, but to suffer precisely because we are doing the right thing, this is particularly difficult. Abraham lost his wife precisely because he listened to God’s command to bind Isaac and this, says Rabbenu Yonah, is why the passing of Sarah is considered the hardest of Abraham’s tests.