IV Maccabees 6:29

29 Let my blood be a purification for them, and take my life in recompense for theirs.

IV Maccabees 6:29 In-Context

27 Thou knowest, O God, that when I might have been saved, I am slain for the sake of the law by tortures of fire.
28 Be merciful to thy people, and be satisfied with the punishment of me on their account.
29 Let my blood be a purification for them, and take my life in recompense for theirs.
30 Thus speaking, the holy man departed, noble in his torments, and even to the agonies of death resisted in his reasoning for the sake of the law.
31 Confessedly, therefore, religious reasoning is master of the passions.

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