Génesis 4:7 Halajá: Sefer Chasidim

Beware, watch your soul lest you be captured in the domain of the evil inclination, lest it thrust you aside from the land of the living. He who seduces you to commit a lesser evil and one who draws your heart to a graver one,¹Shabbath 105b. humble him and suppress him that he be given over into your hand and not that you be given over into his hand, lest he bring you to the lowest pit with fire unblown. And thine evil inclination will not be given over into your hand, but through repentance to your Creator. And to further yourself from the flesh of lust, remember the days which are to come and the great good stored up, “And if thou doest well shall it not be lifted up? And if thou doest not well sin coucheth at the door.”²Genesis 4:7. And you, son of man, return to your Maker with all your heart, and set your heart aright with Him who tries your mind. Raise up your eyes to the heavens and let it shine upon you with joy. Let not your evil inclination trip you during your life. Each day and night return to your heart. For after death there are the afflictions of the grave and after that the bitter judgement of Gehenna. For bitterly do they weep, that they (in Gehenna) be given strength to endure the intensity of the afflictions.³Gittin 57a. And even after he has been rescued from the judgement of Gehenna there are still other judgements difficult and bitter.⁴Baba Metzia 58b. Also the worms that come out of your flesh will eat your carcass and our sages said the worms are as painful for the dead as a needle in the flesh of the living.⁵Berakoth 18b.