Mary said, "Behold, the handmaid of the Lord; be it to me according to your word." The angel departed from her.
      Hereupon, the angel departed from her; having completed the errand he was sent upon, he returned, to give an account of it, and receive new instructions. Converse with angels was always a transient thing, and soon over; it will be constant and permanent in the future state. It is generally supposed that just at this instant the virgin conceived, by the overshadowing power of the Holy Ghost: but, the scripture being decently silent concerning it, it doth not become us to be inquisitive, much less positive.