Eating sour grapes and transmitting sin over generations

Prophesying the restoration of Israel, Jeremiah makes the following statement: > In those days they shall no longer say: ‘The fathers have eaten sour > grapes, and the children’s teeth are set on edge.’ (Jer 31:29 - also see Ezek 18:2) which is explained in the next verse: > But everyone shall die for his own iniquity. Each man who eats sour > grapes, his teeth shall be set on edge. (Jer 31:30) However, in the next chapter the following statement is made: > You show steadfast love to thousands, but you repay the guilt of > fathers to their children after them... (Jer 32:18) This reminds of a statement made in the Ten Commandments: > I, the Lord your God, am a jealous God, punishing the children for > the sin of the parents to the third and fourth generation of those who > hate me, but showing love to a thousand generations of those who love > me and keep my commandments. (Ex 20:5,6) In one sense therefore every person will die for his/her own sin, yet there is a possibility of carrying sin/guilt over to the next generation. Is Israel (and/or God's children) exempt from transmitting the guilt, or how should we solve this seeming paradox?