De Virtutibus

Do not you see, that it has been a care to that all-wise and all-good lawgiver, that not even in the case of brute beasts shall the offspring be separated from the mother until it has been nourished by her milk? And this is ordained principally for your sake, you noble persons, that if you have it not by nature, you may at least learn proper affection for your kindred by instruction, and having regard to the examples of lambs and kids, who are not hindered from revelling in the most abundant possible supply of necessary food, which nature itself prepares for them in the most convenient places, by which easy enjoyment of food is granted to those that stand in need of it the lawgiver providing, with great zeal and care, that no one shall intercept the bountiful and saving gifts of God.

And being desirous to implant the seeds of gentleness and humanity in the minds of men, by every kind of expedient imaginable, he adds also another injunction akin to the preceding one, forbidding any one to sacrifice the mother and the offspring on the same day, for even if they are both to be sacrificed, still it must be at different times, for it is the greatest extravagance of barbarity to slay in one day the animal which has been born and her who is the cause of its birth.

And for what object is this done? one is slain on pretence of sacrifice, the other for the gratification of the belly. If then it is on pretence of offering them in sacrifice, then the very name is given with falsehood; for animals taken for such purpose are victims, not sacrifices. [*]( The Greek is σφάγια, not θυσία. ) And what altar of God would ever receive such unholy sacrifices? And as for the fire, would it not of its own accord divide itself in two parts and stand asunder, avoiding all the contamination which might arise from any contact with such a profane thing? I imagine that it would not have remained, no, not for even the briefest time, but would have been immediately extinguished, out of a watchful care that the air, and the most holy nature of the Spirit, should not be polluted by the ascending flames.