1 Kings 20:23 - Matthew Poole's English Annotations on the Holy Bible

The servants of the king of Syria suppose that their gods were no better than the Syrian gods, (which the idolatry of the Israelites had given them too great cause to imagine,) and that there were many gods who had each his particular charge and jurisdiction; which was the opinion of all heathen nations, that some were gods of the woods, others of the rivers, and others of the mountains; and they fancied these to be the latter, because the land of Canaan was a mountainous land, Deuteronomy 12:2; and the great temple of their god at Jerusalem stood upon a hill, and so did Samaria, where they had received their last blow: or because the Israelites did generally chose high places for the worship of their gods. It is observable that they do not impute their ill success to their negligence, and drunkenness, and bad conduct, or cowardice, of which they were really guilty; nor to the valour of the Israelites; but to a Divine power, which indeed was visible in it. Let us fight against them in the plain; wherein there was not only superstition, but policy, because the Syrians most excelled the Israelites in horses, which are most serviceable in plain ground.