So Saul took the kingdom over Israel. — Some expositors closely connect this verse with the successful termination of the Philistine war, considering that it was through this great victory over the nation which had so long harassed and impoverished Israel that Saul really acquired for the first time the regal authority over all Israel, and that previously his rule had only been acknowledged in certain of the tribes. It is, however, better to consider the statement contained in this verse as simply a general view of Saul’s reign, which was a reign of perpetual wars. The words, then, of our verse are simply introductory to the list of wars waged from the very beginning of his government. It should be observed that this view is supported by the mention of the Ammonite war, which took place a considerable time before the events just related. Such a mention would, therefore, be out of place, unless we take this verse as containing a general statement — in other words, “Saul assumed the reins of government, and during his reign he waged the following wars.”
On every side... Moab... Ammon... Edom... Zobah... Philistines. — This enumeration of the nations with whom he fought literally included the countries on every side of the Land of Promise. Moab and Ammon bounded the Israelites on the east; Edom on the south; the Philistines on the west, along the coast of the Mediterranean; while Zobah was a district of Syria on the north-east of the territory of the twelve tribes, lying between the Euphrates and the Syrian Orontes.
He vexed them. — The exact sense of the Hebrew word yar’shia, rendered in our version “he vexed,” has puzzled all commentators. The LXX. evidently read another word here, as they translate it by esôzeto, “he was preserved.” The majority of the versions and Gesenius, however, give the real sense: “Whithersoever he (Saul) turned himself lie was victorious.” Luther’s rendering is scholarly: “Whithersoever he turned he inflicted punishment,” and is adopted by Keil.