From the Taking of Jerusalem by Antiochus Epiphanes to the Death of Herod the Great - Flavius Josephus

then it was that he called me to him, and said, My dear wife, I have been
greatly mistaken as to the disposition of my brother towards me, and have
hated him that is so affectionate to me, and have contrived to kill him who is
in such disorder for me before I am dead. As for myself, I receive the
recompence of my impiety; but do thou bring what poison was left with us
by Antipater, and which thou keepest in order to destroy him, and consume it
immediately in the fire in my sight, that I may not be liable to the avenger in
the invisible world." This I brought as he bid me, and emptied the greatest
part of it into the fire, but reserved a little of it for my own use against
uncertain futurity, and out of my fear of thee."
7. When she had said this, she brought the box, which had a small
quantity of this potion in it: but the king let her alone, and transferred the
tortures to Antiphilus's mother and brother; who both confessed that
Antiphilus brought the box out of Egypt, and that they had received the
potion from a brother of his, who was a physician at Alexandria. Then did
the ghosts of Alexander and Aristobulus go round all the palace, and became
the inquisitors and discoverers of what could not otherwise have been found
out and brought such as were the freest from suspicion to be examined;
whereby it was discovered that Mariamne, the high priest's daughter, was
conscious of this plot; and her very brothers, when they were tortured,
declared it so to be. Whereupon the king avenged this insolent attempt of the
mother upon her son, and blotted Herod, whom he had by her, out of his
treament, who had been before named therein as successor to Antipater.
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