If an iron axhead is blunt and a workman does not sharpen its edge, he must exert a great deal of effort; so wisdom has the advantage of giving success.

“When that time comes, people will no longer say, ‘The parents have eaten sour grapes, but the children’s teeth have grown numb.’

Rather, each person will die for his own sins. The teeth of the person who eats the sour grapes will themselves grow numb.

“What do you mean by quoting this proverb concerning the land of Israel, “‘The fathers eat sour grapes And the children’s teeth become numb?’