Tension grips the city of Jezreel as the king anxiously awaits news from the war front in Aram. Stationed on a high vantage point to look out into the distance [מצודת ציון], a watchman spots a massive crowd approaching the city. The primary approach among commentators is that the watchman sees a vast multitude of people, though some identify this approaching force specifically as a military troop [רש״י]. Because they are still far away, the watchman can only see the sheer size of the group and cannot yet recognize that these are actually Jehu's men [מצודת דוד].
Upon hearing the watchman's report, King Jehoram immediately issues an order to dispatch a horseman—a rider or a servant taking his master's horse [מצודת ציון, רלב״ג, רד״ק, ביאור שטיינזלץ]—to meet the approaching crowd. The king assumes that a large group arriving from the north must be carrying fresh updates from the battlefield. Gripped by the fear that they might be bringing news of a military defeat [ביאור שטיינזלץ], he sends the rider to quickly determine their intentions and find out if they come in peace or for war [מצודת דוד].