IV Maccabees 7:14

14 By the spirit of reasoning, and the reasoning of Isaac, he rendered powerless the many-headed instrument.

IV Maccabees 7:14 In-Context

12 so, Eleazar, the descendant of Aaron, wasted away by the fire, did not give up his reasoning.
13 And, what is most wonderful, though an old man, though the labours of his body were now spent, and his fibres were relaxed, and his sinews worn out, he recovered youth.
14 By the spirit of reasoning, and the reasoning of Isaac, he rendered powerless the many-headed instrument.
15 O blessed old age, and reverend hoar head, and life obedient to the law, which the faithful seal of death perfected.
16 If, then, an old man, through religion, despised tortures even unto death, confessedly religious reasoning is ruler of the passions.

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