Life can be peaceful one moment and brutal the next. This verse starkly illustrates how quickly circumstances can change, even for those seemingly established.
The text doesn't pull punches. It records that Ezer and Elead, descendants of Zabad, were killed by the men of Gath while raiding their livestock. This wasn't a planned battle or a consequence of a major transgression, but a violent, sudden end met during an act of aggression.
This reminds us that the ancient world, and indeed our world, is often characterized by conflict and danger. Raiding livestock was a common, albeit illicit, way to gain resources, and it carried significant risks. Their actions led directly to their demise, a harsh but plain consequence recorded without embellishment.