Salmi 18:27 Cabala: Zohar

For that reason, one he goat is sacrificed monthly, to draw the serpent to his place so that he will be separated from the moon. In addition, a he goat should be sacrificed on Yom Kippur. This is done with wisdom, so as to control the serpent, so that he can not do evil. This is the meaning of the verse: "and the goat (Heb. שָּׂעִיר) shall bear upon it all their iniquities" (Vayikra 16:22). This refers to Esau, who is hairy (Heb. שָּׂעִיר). All of this was done wisely and cleverly. Why? Because it is written, "and with the perverse you will show yourself subtle" (Tehilim 18:27). This is the evil serpent, the tortuous spirit, wise in wickedness, who accuses above and incites below.

Rabbi Yehuda said that this should have been true of Laban as well, because he was also a sorcerer, as it is written, "I have learned by signs that Hashem has blessed me for your sake" (Gen. 30:27). And although Jacob was a plain and whole man, he was merciful with whomever he had to be merciful with. He was strict in judgment and deceitful when necessary. For he consisted of two parts. It is written of him, "With the merciful you will show yourself merciful; and with the perverse you will show yourself subtle" (Tehilim 18:26), which means that with the merciful on the side of Chesed, and with the perverse on the side of Strict Judgment, all as it ought to be.