And then, the sons of Israel discerned this sign during the battle (for the sons of Benjamin had thought that they fled, and they pursued them forcefully, cutting down thirty men from their army)
Other versions
King James Version
And when the men of Israel retired in the battle, Benjamin began to smite and kill of the men of Israel about thirty persons: for they said, Surely they are smitten down before us, as in the first battle. English Standard Version
the men of Israel should turn in battle. Now Benjamin had begun to strike and kill about thirty men of Israel. They said, "Surely they are defeated before us, as in the first battle."New International Version
and then the men of Israel would turn in the battle. The Benjamites had begun to inflict casualties on the men of Israel (about thirty), and they said, "We are defeating them as in the first battle."