2 Samuel 18:24-27

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

25The watchman called out and told the king. And the king said, "If he is alone, there is news in his mouth." And he drew nearer and nearer.

26The watchman saw another man running. And the watchman called to the gate and said, "See, another man running alone!" The king said, "He also brings news."

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