It is amazing what comes up when I am researching.
I was thinking about the 2 witness rule
Amnon tricked his half-sister Tamar to be alone with him and then raped her. Tamar's full brother Absalom found out, it is implied by the WTS that there had not been 2 witnesses to the rape (hah!). Absalom did not forget how Amnon escaped the death penalty. Later Absalom carried out the punishment himself. The WTS has used this story to tell young female jws how they would be responsible if they allowed themselves to be fooled by non-jw men into a similar situation. But, Amnon was a member of her own religion and her half-brother as well.
The WTS dance around on this (the whole article is eye-opening and hypocritical, worth reading to learn how the WTS adds to the bible account.
Clearly Amnon’s end bears out the truth of the Scriptural principle as to the importance of guarding one’s heart. And Amnon’s failure in this regard also brought much grief to others, to lovely Tamar and doubtless also to her close acquaintances. It certainly brought grief to her father. But quite likely because of his own sin against Uriah in connection with Bath-sheba, David had not been able to bring himself to act against Amnon. With Amnon’s violent death the prophecy uttered by Nathan at the time of David’s great sin began to undergo fulfillment.—2 Sam. 12:10.
(So once again someone other than David paid greatly for his sin)