Luke 1:36
And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren. And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren.
The words were addressed to Mary in Nazareth as part of the angel's announcement of the coming birth of Jesus. In reporting that Elizabeth had conceived, the announcement joined the birth of John the Baptist to the coming of Jesus. Mary treasured those angelic words in her heart as evidence that Jesus was the Messiah.