On the night before Yetziat Mitzrayim , when Hashem struck the Egyptian firstborns, the Jewish people were commanded to remain inside their homes until morning. Rashi explains that Chazal teach in Masechet Bava Kama : " - מאחר שניתנה רשות למשחית לחבל אינו מבחין בין צדיק לרשע - Once the destroying angel is given permission to destroy, he no longer distinguishes between a tzaddik and a rasha ." Since the angel had permission that night, the Jewish people were instructed to stay indoors and out of harm's way. At first glance, this seems troubling. Does it mean that even a tzaddik can be harmed, despite his righteousness? How do we reconcile this with Avraham Avinu's plea when he heard that Hashem planned to destroy Sedom ? He said, "Far be it from You to kill the righteous along with the wicked!"—suggesting that Hashem would never allow a tzaddik to suffer unjustly. The Emek Beracha writes further that a tzaddik even has the power to repel the destroying angel, as we see with Aharon Hakohen and Pinchas , who halted plagues through their actions. In the beginning of Parashat Vaera, the pasuk says, וידבר אלוקים אל משה ויאמר אליו אני ה '. Hashem used His name of judgment and mercy in the very same pasuk. The Ohr Hachayim there explains, Hashem was telling Moshe, While I was dealing with the Egyptians with harsh judgement, simultaneously I was granting mercy to the Jews, even though they were mixed in with each other. Even though the destroying angel was given permission to destroy, Hashem still had mercy on the Jews. The Rambam teaches that as long as a tzaddik maintains a deep connection to Hashem in his thoughts, he remains untouchable. The Gemara in Masechet Shabbat states, "There is no death without sin and no affliction without transgression." There is never a moment that everything is not being completely controlled by Hashem. A destroying angel is just another one of Hashem's millions of agents carrying out His will. The Alsheich strengthens this point based on the pasuk that states Hashem stands amidst the judges when they are judging a court case. A judge must be fully aware of Hashem's presence so that He does not sway the judgment by even one iota. The Gemara says a judge should feel like the gates of Gehinom are open beneath him and as if there is a sharp sword stretched out against him if he purposely judges a case wrongfully. Look how much Hashem cares about the right judgment being done. He doesn't want someone who doesn't owe money to pay. He doesn't want someone who doesn't deserve a penalty to receive it, whether it's lashes or worse. Then how could it possibly be that He would allow a Tzaddik to suffer or a destroying angel not to be מבחין בין צדיק לרשע if he doesn't deserve it? The Alsheich explains, when Chazal said the angel doesn't distinguish, refers to when Hashem sends the angel of death to take the lives of people who are committing the worst of averot. That becomes a time of Din. At that time the angel is given permission to see everyone's sins illuminated on their foreheads. If a tzaddik has a sin that is fitting to be punished in a similar manner, then the tzaddik will be taken as well. Normally, Hashem, in His infinite mercy, gives people years to make teshuva. Someone could even be given decades before he is punished for a sin in the hope that he will repent and not need to be punished. However, if there is a time of divine decree, then the sins of the tzaddik will be brought to light. However, if the tzaddik does not deserve to be punished, the destroying angel will have no power over him. And if he is a tzaddik gamur , he will even repel the angel. The bottom line is we are always under the hashgacha of Hashem. No person or angel ever has any power of its own. Therefore, we can be calm knowing that we are always only in the hands of Hashem.