It would be a small matter for the Spouse to bear children to the Bridegroom, if he gave her nothing for their nourishment; the Bridegroom therefore here speaks of her breasts, to show that she is not only a mother, but a nurse. In truth, not only has she abundant nourishment for her children, but her breasts are always full, though they are incessantly emptied, and there is not an instant when some one is not making some demand upon them. Though they are thus constantly drawn they do not decrease, but on the contrary, their fulness increases with the graces they furnish, so that the measure of their supply is the measure of their fulness. They are very justly compared to the young twin roes, that we may understand that she derives what she dispenses wholly from God; for as the young roes depend upon their mother's breast, so the Spouse is always attached to Him from whom she receives whatever she communicates to others.