2 Samuel 17:23 (ESV)
When Ahithophel saw that his counsel was not followed, he saddled his donkey and went off home to his own city. He set his house in order and hanged himself, and he died and was buried in the tomb of his father.
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Remember those earlier days after you had received the light, when you endured in a great conflict full of suffering. Sometimes you were publicly exposed to insult and persecution; at other times you stood side by side with those who were so treated. You suffered along with those in prison and joyfully accepted the confiscation of your property, because you knew that you yourselves had better and lasting possessions. So do not throw away your confidence; it will be richly rewarded.