Three of the daughters are believed to have given birth to a total of six of his children.
The man, who has pleaded not guilty, has testified that he loved his children and never harmed them.
His former wife, and a daughter who said she bore him a child, testified that he told them he wanted to create "pure" family bloodlines and enforced his will with beatings.
The Associated Press doesn't identify victims of sexual crimes and is not reporting the names of the man or his former wife to protect the identities of their children, now over 18.
