We shall surely recognise each other and shall be as close, even closer, than we were in long-past happy days … Abraham will still be Abraham; Isaac, Isaac; and Jacob, Jacob – not bodiless ghosts, but living personalities … Moses and Elijah were recognised as such by the startled disciples on the Transfiguration Mount; and Mary knew the Master in the Garden. What gain would it have been that Jesus promised the dying thief that he should be with Him in paradise, if, when he reached there, he could not recognise the Lord?
(F. B. Meyer)
"Therefore the Lord himself will give you a sign: The virgin will be with child and will give birth to a son, and you will call him Immanuel."
Isaiah 7: 14