Bede the Venerable — as excerpted in the Catena Aurea on Luke 2:36-38

“According to the mystical meaning, Anna signifies the Church, who at present is indeed a widow by the death of her Husband; the number also of the years of her widowhood marks the time of the Church, at which established in the body, she is separated from the Lord. For seven times twelve make eighty-four, seven indeed referring to the course of this world, which revolves in seven days; but twelve had reference to the perfection of Apostolic teaching, and therefore the Universal Church, or any faithful soul which strives to devote the whole period of its life to the following of Apostolic practice, is said to serve the Lord for eighty-four years. The term also of seven years, during which she lived with her husband, coincides. For through the prerogative of our Lord’s greatness, whereby abiding in the flesh, He taught, the simple number of seven years was taken to express the sign of perfection. Anna also favours the mysteries of the Church, being by interpretation its “grace,” and being both the daughter of Phanuel, who is called “the face of God,” and descended from the tribe of Aser, i. e. the blessed.”