Ether 9:26

And the people had spread again over all the face of the land, and there began again to be an exceeding great wickedness upon the face of the land, and Heth began to embrace the secret plans again of old, to destroy his father.

The people had spread across the whole land again. There was very great evil in the land again. Heth started to use the old secret plans to kill his father.

The people had spread across the land again, and terrible wickedness returned. Heth revived the old secret plots to kill his father.