Good News Translation
while Jason and his men went on slaughtering their fellow Jews without mercy. Jason did not realize that success against one's own people is the worst kind of failure. He even considered his success a victory over enemies, rather than a defeat of his own people.

New Revised Standard Version
But Jason kept relentlessly slaughtering his compatriots, not realizing that success at the cost of one’s kindred is the greatest misfortune, but imagining that he was setting up trophies of victory over enemies and not over compatriots.

Contemporary English Version
But Jason kept on killing more Jews, without realizing that a victory which destroys your own people is the worst possible defeat. He seemed to think he had won a battle against enemies rather than against other Jews.

New American Bible
For his part, Jason continued the merciless slaughter of his fellow citizens, not realizing that triumph over one’s own kindred is the greatest calamity; he thought he was winning a victory over his enemies, not over his own people.

Douay-Rheims Bible
But Jason slew his countrymen without mercy, not considering that prosperity against one's own kindred is a very great evil, thinking they had been enemies, and not citizens, whom he conquered.

But Jason slew his countrymen without mercy, not considering that prosperity against one's own kindred is a very great evil, thinking they had been enemies, and not citizens, whom he conquered.

2 Maccabees 5:4
Wherefore all men prayed that these prodigies might turn to good.

2 Maccabees 5:5
Now when there was gone forth a false rumour as though Antiochus had been dead, Jason taking with him no fewer than a thousand men, suddenly assaulted the city: and though the citizens ran together to the wall, the city at length was taken, and Menelaus fled into the castle.

2 Maccabees 5:7
Yet he did not get the principality, but received confusion at the end, for the reward of his treachery, and fled again into the country of the Ammonites.

2 Maccabees 5:8
At the last, having been shut up by Aretas, the king of the Arabians, in order for his destruction, flying from city to city, hated by all men, as a forsaker of the laws and execrable, as an enemy of his country and countrymen, he was thrust out into Egypt: