Our civil law includes the category of statutory rape, which is certainly a biblical concept. If someone under the age of adult responsibility is forcibly taken away (whether for sexual purposes or not), the crime is a species of kidnapping, which in Scripture deserves the death penalty. Part of the reason why a society should have wise and godly men for judges is that they must determine in such cases whether the one raped is almost of age. But when we are dealing with young children who are abused by adults (pederasty, child porn, etc.) the penalty for those guilty of the crime should be death.
Douglas Wilson