The angel of Yahweh appeared to the woman, and said to her, See now, you are barren, and don't bear; but you shall conceive, and bear a son.
and said unto her, behold now, thou art barren, and bearest not; barren at that time, and so she had been ever since she was married to that time; and this is observed, that it might appear the more wonderful that she should after this have a child: