The verse states (Gen 48:10) ועיני ישראל כבדו מזקן לא יוכל לראות "And Israel's eyes were weakened (i.e. obstructed) by his beard, so he couldn't see". If his beard was obstructing his vision, why didn't he just shave?
closed as off-topic by msh210♦ Mar 14 '17 at 21:42
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Yaakov followed the rule of שב ואל תעשה עדיף - Shave Ve'Al Taaseh Adif
Actually the word כבדו comes from the word כבד meaning "honor". So his eyes were actually honored by his having the beard. If he shaved it, his eyes wouldn't be honored!