So you’re saying in the Duggar’s case that both Josh and the girls should be put to death?
You want to apply the Law of Moses you have to apply the entire law. A child is not accountable so neither would be guilty.
You do know you are putting forth an extreme case of the strawman fallacy?
The quote from which you are arguing for death is regarding deliberate incestual intercourse. Inappropriate touching is a long way from it, especially when the sisters were not willing participants.
The quote also does not specify death as the punishment, that is another overreach you have put forth to increase the shock value of your emotional argument.
Bad form old chap.