But concerning that day and hour, no one knows, not even the angels of Heaven, neither the Son, but the Father only.

But, when the fulness of the time came, God sent forth His Son, born of a woman, born under law,

and He, answering, said to them, "When it is evening, ye say, 'It will be fair, for the heaven is red;' and in the morning, 'Today, a tempest; for red is the overcast heaven.' The face of the heaven, indeed, ye know how to discern, but the signs of the times ye can not discern. An evil and adulterous generation is seeking after a sign; and no sign will be given to it, except the sign of Jonah the prophet." And, leaving them, He departed.

Now the birth of Jesus Christ was thus: His mother Mary having been betrothed to Joseph, before they came together she was found to be with child of the Holy Spirit.