III Maccabees 7:5-15

5 They brought them fettered in grievous chains as slaves, nay, as traitors. Without enquiry or examination they endeavoured to annihilate them. They buckled themselves with a savage cruelty, worse than Scythian custom.
6 For this cause we severely threatened them; yet, with the clemency which we are wont to extend to all men, we at length permitted them to live. Finding that the God of heaven cast a shield of protection over the Jews so as to preserve them, and that he fought for them as a father always fights for his sons;
7 and taking into consideration their constancy and fidelity towards us and towards our ancestors, we have, as we ought, acquitted them of every sort of charge.
8 And we have dismissed them to their several homes; bidding all men everywhere to do them no wrong, or unrighteously revile them about the past.
9 For know ye, that should we conceive any evil design, or in any way aggrieve them, we shall ever have as our opposite, not man, but the highest God, the ruler of all might. From Him there will be no escape, as the avenger of such deeds. Fare ye well.
10 When they had received this letter, they were not forward to depart immediately. They petitioned the king to be allowed to inflict fitting punishment upon those of their race who had willingly transgressed the holy god, and the law of God.
11 They alleged that men who had for their bellies' sake transgressed the ordinances of God, would never be faithful to the interests of the king.
12 The king admitted the truth of this reasoning, and commended them. Full power was given them, without warrant or special commission, to destroy those who had transgressed the law of God boldly in every part of the king's dominions.
13 Their priests, then, as it was meet, saluted him with good wishes, and all the people echoed with the Hallelujah. They then joyfully departed.
14 Then they punished and destroyed with ignominy every polluted Jew that fell in their way;
15 slaying thus, in that day, above three hundred men, and esteeming this destruction of the wicked a season of joy.

The Brenton translation of the Septuagint is in the public domain.