Midrash sobre Jó 2:9

Ye shall not do with Me as you do with gods of silver (Exod. 20:20). Do not act toward Me as men do toward those whom they fear. When good fortune comes to them, they honor those they fear, as it is said: Therefore they sacrifice unto their net, and offer unto their drag; because by them their portion is fat, and their food plenteous (Hab. 1:16). However, when afflictions befall them, they curse those they fear, as it is said: And it shall come to pass that, when they shall be hungry, they shall fret themselves, and curse by their king and by their god (Isa. 8:21). However, you shall praise Me both for fortune and for misfortune. Thus David said: I will fill up the cup of salvation, and call upon the name of the Lord (Ps. 116:13), whether for good or for evil. Then said his wife unto him: “Dost thou still hold fast thine integrity? Blaspheme God, and die!” But he said unto her: “Thou speakest as one of the impious women speaketh. What? Shall we receive good at the hand of God, and shall we not receive evil?” (Job. 2:9–10). A man should rejoice over his afflictions more than over his good fortune. Even if man should enjoy good fortune all his life, (this merely indicates that) the sins he committed are not being forgiven. What causes sins to be forgiven? Only suffering.