From: Luke 2:36-40
 And there was a prophetess Anna, the daughter of Phanuel, of the tribe of Ahser; she was of a great age, having lived with her husband seven years from her virginity,  and as a widow till she was eighty-four. She did not depart from the temple, worshipping with fasting and prayer night and day.  And coming up at that very hour she gave thanks to God, and spoke of Him to all who were looking for the redemption of Jerusalem.
The Childhood of Jesus
 And when they had performed everything according to the law of the Lord, they returned to Galilee, to their own city, Nazareth.  And the child grew and became strong, filled with wisdom; and the favor of God was upon Him.
36-38. Anna's testimony is very similar to Simeon's; like him, she too has been awaiting the coming of the Messiah her whole life long, in faithful service of God, and she too is rewarded with the joy of seeing Him. "She spoke of Him," that is, of the Child--praising God in her prayer and exhorting others to believe that this Child is the Messiah.
Thus, the birth of Christ was revealed by three kinds of witnesses in three different ways--first, by the shepherds, after the angel's announcement; second, by the Magi, who were guided by a star; third, by Simeon and Anna, who were inspired by the Holy Spirit.
All who, like Simeon and Anna, persevere in piety and in the service of God, no matter how insignificant their lives seem in men's eyes, become instruments the Holy Spirit uses to make Christ known to other. In His plan of redemption God avails of these simple souls to do much good to all mankind.
39. Before their return to Nazareth, St. Matthew tells us (2:13-23), the Holy Family fled to Egypt where they stayed for some time.
40. "Our Lord Jesus Christ as a child, that is, as one clothed in the fragility of human nature, had to grow and become stronger but as the eternal Word of God He had no need to become stronger or to grow. Hence He is rightly described as full of wisdom and grace" (St. Bede, "In Lucae Evangelium Expositio, in loc.").
Source: "The Navarre Bible: Text and Commentaries". Biblical text taken from the Revised Standard Version and New Vulgate. Commentaries made by members of the Faculty of Theology of the University of Navarre, Spain. Published by Four Courts Press, Kill Lane, Blackrock, Co. Dublin, Ireland. Reprinted with permission from Four Courts Press and Scepter Publishers, the U.S. publisher.