2 Samuel 18:25

23“But come what may,” he said, “I will run.” He said to him, “Run!” Then Ahimaaz ran by the way of the Plain, and outran the Cushite.

24Now David was sitting between the two gates; and the watchman went up to the roof of the gate to the wall, and lifted up his eyes and looked, and, behold, a man running alone.

25The watchman shouted and told the king. The king said, “If he is alone, there is news in his mouth.” He came closer and closer.

26The watchman saw another man running; and the watchman called to the gatekeeper and said, “Behold, a man running alone!” The king said, “He also brings news.”

27The watchman said, “I think the running of the first one is like the running of Ahimaaz the son of Zadok.” The king said, “He is a good man, and comes with good news.”