2 But the sons of the Jews by setting at nought Him that came, and looking for him who comes in wickedness, rejected the true Messiah, and wait for the deceiver, themselves deceived; herein also the Saviour being found true, who said, I have come in My Father's name, and you receive Me not: but if another shall come in his own name, him you will receive. It is well also to put a question to the Jews. Is the Prophet Esaias, who says that Emmanuel shall be born of a virgin, true or false? For if they charge him with falsehood, no wonder: for their custom is not only to charge with falsehood, but also to stone the Prophets. But if the Prophet is true, point to the Emmanuel, and say, Whether is He who is to come, for whom you are looking, to be born of a virgin or not? For if He is not to be born of a virgin, you accuse the Prophet of falsehood: but if in Him that is to come you expect this, why do you reject that which has come to pass already?
Source: Catechetical Lectures (New Advent)