Mosiah 24:8

And now it came to pass that Amulon began to exercise authority over Alma and his brethren, and began to persecute him, and cause that his children should persecute their children:

Then Amulon began to use his power over Alma and his people. He started to hurt them. He made his children hurt their children too.

Then Amulon began using his authority over Alma and his people. He started persecuting them, and his children persecuted their children.