2 Samuel 18:19-23

19Then Ahimaaz the son of Zadok said, “Let me run now and take the news to the king, how the Lord has avenged him of his enemies.”

20And Joab said to him, “You shall not take the news this day, for you shall take the news another day. But today you shall take no news, because the king’s son is dead.”

21Then Joab said to the Cushite, “Go, tell the king what you have seen.” So the Cushite bowed himself to Joab and ran.

22And Ahimaaz the son of Zadok said again to Joab, “But whatever happens, please let me also run after the Cushite.” So Joab said, “Why will you run, my son, since you have no news ready?”

23“But whatever happens,” he said, “let me run.” So he said to him, “Run.” Then Ahimaaz ran by way of the plain, and outran the Cushite.