While they were on the way, news came to David, “Absalom has struck down all the king’s sons, and not one of them is left.”
Here is, I. The fright that David was put into by a false report brought to Jerusalem that Absalom had slain all the king's sons, Sa2 13:30. It is common for fame to make bad worse; and the first news of such a thing as this represents it as more dreadful than afterwards it proves.
Commenting on 2 Samuel 13:30-39
And it came to pass while they were in the way,.... On their road homewards, before they got to Jerusalem: that tidings came to David; perhaps brought by one who was at the entertainment, who upon seeing Amnon smitten, immediately rose up and fled with the news of it to David: saying, Absalom hath slain all the king's sons, and there is not one of...
tidings came to David, saying, Absalom hath slain all the king's sons--It was natural that in the consternation and tumult caused by so atrocious a deed, an exaggerated report should reach the court, which was at once plunged into the depths of grief and despair.