קבלה על דברים 7:10

When the soul is weak and the body strong, man is hated by the Holy One, blessed be He, who does not care for him. Therefore, He inflicts no suffering on him in this world. His life runs smoothly and perfectly, for if this man gives alms or performs a kindness, the Holy One, blessed be He, rewards him in this world so that he will have no portion in the World to Come. This is why Unkelos translated the verse, "And He repays them that hate Him to their face" (Devarim 7:10) as 'And He repays them that Hate him in this world.' Thus, the righteous person, who always experiences pain, is beloved by the Holy One, blessed be He. This is true only if he is found to have committed no sin that merits punishment.

(i.e. the 'sons of Elohim') are Aza and Azael, from whom descended the souls of (the second group in) the mixed multitude, which are the Nefilim. They made themselves fall, and they fornicated with women who were fair. Because of this, the Holy One, blessed be He, also eliminated them from the World to Come, so that they may not have a portion there. And He gave them their reward in this world, as it is written: "...and repays them that hate Him to their face, to destroy them" (Devarim 7:10).