Midrash su I Cronache 21:27

(Gen. 6:3:) AND THE LORD SAID: MY SPIRIT SHALL NOT BE SHEATHED IN HUMANS FOREVER. Resh Laqish said: The Holy One said: I am not creating another soul for humans. Thus it is stated: MY SPIRIT SHALL NOT BE SHEATHED IN HUMANS FOREVER. R. Johanan said: What is the meaning of SHALL NOT BE SHEATHED?¹¹¹Cf. Gen. R. 26:6. When their souls come up to me, I do not restore them to their < sheaths >. Compare what is stated (in I Chron. 21:27): THEN THE LORD COMMANDED THE ANGEL, AND HE PUT HIS SWORD INTO ITS SHEATH. The Holy One said to them: You are doing evil to yourselves in that you are falling (nophelim) from the world. Thus it is stated (in Gen. 6:4): THE NEPHILIM WERE IN THE EARTH…. Why are they named NEPHILIM (rt.: NPL)?¹¹²See Gen. R. 26:7.