Our Torah portion teaches us that when a Cohen (priest) becomes unclean, in order to eat his portion of the sacrifices he has to become pure again. How does he attain a state of purity again? By “immersing his flesh in water” (Lev. 22:6) and by waiting until the “sun sets” (Ibid. 7). After these two things occur “he becomes clean, and afterwards, he may eat of the holy things, for it is his food” (Ibid.). The same is true, I would like as to suggest, to almost all our “impurities” (all our problems, our mistakes and our sufferings). To overcome that state we always need two things: Action & Time. One without the other rarely works. For example, if you are sick you need to take some medicine or undergo some treatment but the cure is not automatic, you need time to heal. The same is true when you make a mistake by wronging someone, you first need to apologize and make amends for your mistake and then you need to give time to the other person to forgive you. For the Cohen who was in a state of impurity it wasn’t enough just to go to the Mikvah or to wait for the sun to set, he needed both to become ritually pure again. We also always need to take an action and to allow some time to return to a state of purity.