2 Samuel 18:19-23

19Ahimaaz son of Zadok said, “Please let me run and tell the king the good news that the Lord has vindicated him by freeing him from his enemies.”

20Joab replied to him, “You are not the man to take good news today. You may do it another day, but today you aren’t taking good news, because the king’s son is dead.”

21Joab then said to a Cushite, “Go tell the king what you have seen.” The Cushite bowed to Joab and took off running.

22However, Ahimaaz son of Zadok persisted and said to Joab, “No matter what, please let me also run behind the Cushite!” Joab replied, “My son, why do you want to run since you won’t get a reward?”

23“No matter what, I want to run!” “Then run!” Joab said to him. So Ahimaaz ran by way of the plain and outran the Cushite.