So Absalom fled, and the young man who [was] keeping watch lifted up his eyes and saw, and there were many people coming from the road behind him from the side of the mountain. Jonadab said to the king, "Look, the sons of the king have come. According to the word of your servant, so it has come about." When he finished speaking, look, the sons of the king came and they lifted up their voice and wept. Also, the king and all his servants wept a very great weeping. read more.
Absalom fled and went to Talmai the son of Ammihur, the king of Geshur. [David] mourned over his son {day after day}. But Absalom had fled and went [to] Geshur, and he [was] there three years.

Then Jonadab the son of Shimeah, the brother of David, responded and said, "My lord should not think that all the young men, the sons of the king, [are] dead, because only Amnon [is] dead. {Absalom was talking about it}, as it was being determined from the day he raped Tamar his sister. So then, let not my lord the king set his heart on this matter, thinking, 'All the sons of the king [are] dead,' for only Amnon alone [is] dead." So Absalom fled, and the young man who [was] keeping watch lifted up his eyes and saw, and there were many people coming from the road behind him from the side of the mountain. read more.
Jonadab said to the king, "Look, the sons of the king have come. According to the word of your servant, so it has come about."