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49 The Lord will bring a nation against you from far away, from the ends of the earth, like an eagle swooping down, a nation whose language you will not understand, 50 a fierce-looking nation without respect for the old or pity for the young. 51 They will devour the young of your livestock and the crops of your land until you are destroyed. They will leave you no grain, new wine or olive oil, nor any calves of your herds or lambs of your flocks until you are ruined. 52 They will lay siege to all the cities throughout your land until the high fortified walls in which you trust fall down. They will besiege all the cities throughout the land the Lord your God is giving you.
53 Because of the suffering your enemy will inflict on you during the siege, you will eat the fruit of the womb, the flesh of the sons and daughters the Lord your God has given you. 54 Even the most gentle and sensitive man among you will have no compassion on his own brother or the wife he loves or his surviving children, 55 and he will not give to one of them any of the flesh of his children that he is eating. It will be all he has left because of the suffering your enemy will inflict on you during the siege of all your cities. 56 The most gentle and sensitive woman among you—so sensitive and gentle that she would not venture to touch the ground with the sole of her foot—will begrudge the husband she loves and her own son or daughter 57 the afterbirth from her womb and the children she bears. For in her dire need she intends to eat them secretly because of the suffering your enemy will inflict on you during the siege of your cities.
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Among the residents of the region beyond Jordan was a woman called Mary, daughter of Eleazar, of the village of Bethezuba (the name means "House of Hyssop"). She was well off, and of good family, and had fled to Jerusalem with her relatives, where she became involved with the siege. Most of the property she had packed up and brought with her from Peraea had been plundered by the tyrants [Simon and John, leaders of the Jewish war-effort], and the rest of her treasure, together with such foods as she had been able to procure, was being carried by their henchmen in their daily raids. In her bitter resentment the poor woman cursed and abused these extortioners, and this incensed them against her. However, no one put her to death either from exasperation or pity. She grew weary of trying to find food for her kinsfolk. In any case, it was by now impossible to get any, wherever you tried. Famine gnawed at her vitals, and the fire of rage was ever fiercer than famine. So, driven by fury and want, she committed a crime against nature. Seizing her child, an infant at the breast, she cried, "My poor baby, why should I keep you alive in this world of war and famine? Even if we live till the Romans come, they will make slaves of us; and anyway, hunger will get us before slavery does; and the rebels are crueler than both. Come, be food for me, and an avenging fury to the rebels, and a tale of cold horror to the world to complete the monstrous agony of the Jews." With these words she killed her son, roasted the body, swallowed half of it, and stored the rest in a safe place. But the rebels were on her at once, smelling roasted meat, and threatening to kill her instantly if she did not produce it. She assured them she had saved them a share, and revealed the remains of her child. Seized with horror and stupefaction, they stood paralyzed at the sight. But she said, "This is my own child, and my own handiwork. Eat, for I have eaten already. Do not show yourselves weaker than a woman, or more pitiful than a mother. But if you have pious scruples, and shrink away from human sacrifice, then what I have eaten can count as your share, and I will eat what is left as well." At that they slunk away, trembling, not daring to eat, although they were reluctant to yield even this food to the mother. The whole city soon rang with the abomination. When people heard of it, they shuddered, as though they had done it themselves. --Josephus on the Siege of Jerusalem
Zechariah in a sense could have been said to 'act it out' before it happened, as in: "If you will have no part in my right hand, then here is my left".