Helaman 13:10

yea, I will visit them in my fierce anger, and there shall be those of the fourth generation, which shall live, of your enemies, to behold your utter destruction; and this shall surely come, except ye repent, saith the Lord; and those of the fourth generation shall visit your destruction.

“I will visit them in my great anger. People from the fourth generation of your enemies will still be alive. They will see you completely destroyed. This will happen unless you change, says the Lord. The fourth generation will see your destruction.”

“I’ll come in fierce anger. Four generations of your enemies will still be alive to watch your complete destruction. This will happen unless you repent, says the Lord. The fourth generation will witness your end.”