While this is technically correct within the confines of the biblical narrative itself, I was referring to the parent poster's depiction of the Philistines as a

While this is technically correct within the confines of the biblical narrative itself, I was referring to the parent poster's depiction of the Philistines as aggressors outside of any historical context. It was common for a conqueror to say that he had favor with his gods and/or the conquered were on his gods' hit list, which was more than sufficient justification for attacking a neighbor. Actually, the bar for attacking was much, much lower, but adding a spiritual purpose was always a nice touch.