Tzadikim- Ohr HaChaim (Bereishis 6:3)

 ויאמר השם לא ידון רוחי. G'd said: "My spirit will not abide in man permanently." This verse needs someone to explain it. Our sages have given numerous explanations to it without explaining the plain meaning of the verse. It appears that the Torah wishes to tell us that a change occurred in G'd's dealing with man. During the lifetime of Adam, Eve, Cain and Abel, G'd personally had rebuked man for any misdemeanour. When man's deeds became increasingly repulsive to G'd, He decided not to deal with them on such an intimate basis. 

The word רוחי in our verse therefore means "My Presence." Man had forfeited the privilege of proximity to G'd's Presence. G'd's Presence withdrew from man in direct proportion to his deeds. As long as G'd had confronted man directly whenever He had reason to rebuke them they were on the spiritual level of prophets. When man began to profane himself (meaning of החל in 6,1), he no longer enjoyed that status. In the course of time outstanding individuals, צדיקים, appeared on earth. These individuals succeeded in restoring a closer relationship between man and G'd. After the destruction of the Temple there were no more prophets; the most that remained were individuals who possessed a degree of what our sages describe as רוח הקודש, a measure of holy spirit. Ever since Israel's eyes closed, we no longer have even ריח הקודש, a holy fragrance, not to mention רוח הקודש. The absence of this line of direct communication from G'd is the greatest misfortune for those of us who thirst for at least a fragrance of the holiness of our Father in heaven in order to revive our spirits. The curse we speak about originated with the generation of the deluge. G'd supplies the reason for this in our verse. בשר בשגם הוא, man added to his abominations by adding the sin of בשר, adultery to his other sins. G'd hates sexual permissiveness more than anything else. As a result G'd resented having to communicate directly with such people.

 The characteristic of the righteous is that they refine the body to give it spiritual content. The characteristic of the wicked is that they do the reverse. They degrade the spirit making it the tool of the body. This leads to the destruction of the universe. G'd referred to this when He said: "My spirit will not find satisfaction in them forever more," not even in the world of eternity. This is because they have turned even their spirit into a tool of the flesh. The Talmud (Sanhedrin 108) states that the people who were destroyed by the deluge do not enjoy a life in the Hereafter.