Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[224] Thermuthis was the king's daughter. She was now diverting herself by the banks of the river; and seeing a cradle borne along by the current, she sent some that could swim, and bid them bring the cradle to her. When those that were sent on this errand came to her with the cradle, and she saw the little child, she was greatly in love with it, on account of its largeness and beauty; for God had taken such great care in the formation of Moses, that he caused him to be thought worthy of bringing up, and providing for, by all those that had taken the most fatal resolutions, on account of the dread of his nativity, for the destruction of the rest of the Hebrew nation. Thermuthis bid them bring her a woman that might afford her breast to the child; yet would not the child admit of her breast, but turned away from it, and did the like to many other women. Now Miriam was by when this happened, not to appear to be there on purpose, but only as staying to see the child; and she said, "It is in vain that thou, O queen, callest for these women for the nourishing of the child, who are no way of kin to it; but still, if thou wilt order one of the Hebrew women to be brought, perhaps it may admit the breast of one of its own nation." Now since she seemed to speak well, Thermuthis bid her procure such a one, and to bring one of those Hebrew women that gave suck. So when she had such authority given her, she came back and brought the mother, who was known to nobody there. And now the child gladly admitted the breast, and seemed to stick close to it; and so it was, that, at the queen's desire, the nursing of the child was entirely intrusted to the mother.