You have eaten the bread of tears, etc. Rabbi Elazar says that Esau the wicked shed three tears from his eyes. One from his right eye, one from his left eye, and the third is connected to both eyes, as it says, "And you shall wet your bread with tears, a third part thereof" (Psalms 80:6). He only says "a third," not "three." Rabbi Berachiah says, "One-third of a tear he shed."
Rabbi Avin says, and some say it was in the name of Rabbi Shemlai, that the Great Assembly said before God, "Master of the Universe, because of the three tears that the wicked Esau shed, you have given him control over the entire world, and you have given him peace in this world. When you see the suffering of your children and their eyes overflowing with tears every day, just as it says, 'My tears have been my food day and night' (Psalms 42:4), have mercy on them, even if it is just a little."