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ויתחזק ישראל. ולא רצה לברכם כשהוא במטה שלא יאמר מתנת שכיב מרע היתה ברכתו ולא היה מיושב בדעתו: ויתחזק ישראל, “Israel strengthened himself.” He did not wish to bless his sons while bedridden, as he said that the blessing of a person clearly on the brink of dying, would not be considered as having been given by someone in possession of all his faculties.