It is a matter of no importance whether we say that the miracle by which God now performed deliverance for Samaria consisted in a mere illusion of the sense of hearing (compare 2 Kings 6:19-20); or whether there was any objective reality in the sound (compare the marginal references).
The king of Israel hath hired - The swords of mercenaries had been employed by the nations bordering on Palestine as early as the time of David 2Sa 10:6; 1 Chronicles 19:6-7. Hence, the supposition of the Syrians was far from improbable.
The kings of the Hittites - The Hittites, who are found first in the south Genesis 23:7, then in the center of Judea Joshua 11:3, seem to have retired northward after the occupation of Palestine by the Israelites. They are found among the Syrian enemies of the Egyptians in the monuments of the 19th dynasty (about 1300 B.C.), and appear at that time to have inhabited the valley of the Upper Orontes. In the early Assyrian monuments they form a great confederacy, as the most powerful people of northern Syria, dwelling on both banks of the Euphrates, while at the same time there is a second confederacy of their race further to the south, which seems to inhabit the anti-Lebanon between Hamath and Damascus. These southern Hittites are in the time of Benhadad and Hazael a powerful people, especially strong in chariots; and generally assist the Syrians against the Assyrians. The Syrians seem now to have imagined that these southern Hittites had been hired by Jehoram.
The kings of the Egyptians - This is a remarkable expression, since Egypt elsewhere throughout Scripture appears always as a centralised monarchy under a single ruler. The probability is that the principal Pharaoh had a prince or princes associated with him on the throne, a practice not uncommon in Egypt. The period, which is that of the 22nd dynasty, is an obscure one, on which the monuments throw but little light.