Generational Curse or Not

Question details

There seems to be quite a contradiction when it says in the book of Numbers that children will suffer for 3 or 4 generations, but then there's a verse that says the children are not responsible for the sins of their father. Can you help me out? [Number 14:18-19, Ezekiel 18:20, Exodus 20:5, Exodus 34:7]

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10:59