They would be different from their ancestors, who were stubborn, rebellious

 psalm 78    (A special psalm by Asaph.)

78.8

God gave his Law to Jacob's descendants, the people of Israel.

And he told our ancestors
    to teach their children,
6 so that each new generation
would know his Law
    and tell it to the next.
7 Then they would trust God
    and obey his teachings,
without forgetting anything
    God had done.
8 They would be different
    from their ancestors,
who were stubborn, rebellious,
    and unfaithful to God.