Virgin Mary was prepared for getting the tidings of a baby since she told Zechariah (“It is from Allah. Indeed, Allah provides for whom He wills without account.”) when he had asked her about the source of the provision. Yet, it’s normal for her to say (how will I have a child when no man has touched me?”) when such a miracle becomes a reality and shakes the innermost of Virgin Mary since giving birth is a result of a man-woman affair