'Fathers' in the Bible

"{What do you mean by} quoting this proverb about the land of Israel, {saying}, 'The fathers, they ate unripe fruit, and the teeth of the child became blunt.'

And you must take possession of it, each [one] [a share] like his brother, [of this land] which {I swore} to give it to your fathers, and [so] this land shall fall to you as an inheritance.