Берешит 42:36 Комментарий: Rashi, Radak, Sforno & Tur HaArokh

אתי שכלתם ME YE HAVE BEREAVED OF CHILDREN — The inference is that he suspected them of having slain or sold him (Simeon) as they had done to Joseph (Genesis Rabbah 91:9).

שכלתם, “you have bereaved;” a transitive mode, referring to a third person. The same construction appears when the prophet Samuel tells King Agag why he is about to kill him, saying שכלה נשים חרבך, “your sword has bereaved women” (Samuel I 15,33) Yaakov meant that “you my sons have caused me this problem with three of my sons.”

עלי היו כלנה, none of these incidents has befallen you, whereas all of them have befallen me. It is therefore clear that the reason these tragedies have all befallen me must be your quarrels with one another. Therefore you are to blame for my being bereaved.

שכלתם YE HAVE BEREAVED — any-one whose children are lost to him may be called (שכול) bereaved.