unconquerable
4 occurrences across the corpus
KJV Apocrypha (Eastern Orthodox Additions)
3 Maccabees 4:21
Now this was an active interference of the unconquerable Providence which assisted the Jews from heaven.
OT Pseudepigrapha
4 Maccabees 5:15
And when the guards said to him, 'Consent to eat, that so you may be released from your tortures,' he said to them, 'Your method, O miserable minions, is not strong enough to lead captive my Reason. Cut off my limbs, and burn my flesh, and twist my joints; through all the torments I will show you that in behalf of virtue the sons of the Hebrews alone are unconquerable.'
4 Maccabees 5:57
For the righteous understanding, O tyrant, is unconquerable.
4 Maccabees 7:9
O holy nature, and parental love, and yearning of parents for offspring, and wages of nursing, and unconquerable affection of mothers!