2 Samuel 18:19

Then said Ahimaaz the son of Zadok
To Joab; for it seems he stayed with the army when he with Jonathan brought the message from Hushai to David:

let me now run, and bear the king tidings how that the Lord hath
avenged him on his enemies;
which he thought would be very acceptable to hear of as soon as possible; and to be a messenger with tidings of a victory, as it was honourable, so likewise profitable then as now; though perhaps Ahimaaz might have no respect to the reward, as indeed none could be expected, since the death of Absalom would be so disagreeable to the king; but was desirous of it, that the king might be acquainted with the event of the battle as soon as might be.