The feast commemorating the birth of the Immaculate Virgin Mary from the womb of Saint Anne in the sixth century in Syria or Jerusalem. The Church of Rome began celebrating the feast of Our Lady's Nativity as early as the seventh century, since we know that Pope Sergius I (687-701) prescribed a litany to be recited for the festival.
Concerning the birth of Our Lady, Saint Andrew of Crete gave a beautiful exposition, exhorting the faithful to find encouragement for their lives in the glorious birth of Mary:
People of God, holy nation, sacred gathering! Let us revere our paternal memory; let us extol the power of the mystery! Each of us, in the measure given by grace, let us offer a worthy gift for the present feast. Fathers -- a prosperous lineage; mothers -- fine children; the unbearing -- the not-bearing of sin; virgins -- a twofold prudence, of soul and of body; betrothed -- praiseworthy abstinence. If anyone of you be a father, let him imitate the father of the Virgin; and if anyone be without child -- let them make harvest of fruitful prayer, cultivating a life pleasing to God. The mother, feeding her children, let her rejoice together with Anna, raising her Child, given to her in infertility through prayer.
She that is barren, not having given birth, lacking the blessing of a child, let her come with faith to the God-given Offshoot of Anna and offer there her barrenness. The virgin, living blamelessly, let her be a mother by discourse, adorning by word the elegance of soul. For a betrothed -- let her offer mental sacrifice from the fruits of prayer. All together rich and poor, lads and maidens, old and young (Ps 48:2, 148:12), priests and levites -- let all together keep the feast in honor of the Maiden, the Theotokos and the Prophetess: from Her has issued forth the Prophet, foretold by Moses, Christ God and Truth (Dt 18:15). Amen.
Here is a description of the holy birth of Mary by the mystic Venerable Maria Agreda:
She was born pure and stainless, beautiful and full of grace, thereby demonstrating, that She was free from the law and the tribute of sin. Although She was born substantially like other daughters of Adam, yet her birth was accompanied by such circumstances and conditions of grace, that it was the most wonderful and miraculous birth in all creation and will eternally redound to the praise of her Maker. At twelve o’clock in the night this divine Luminary issued forth, dividing the night of the ancient Law and its pristine darknesses from the new day of grace, which now was about to break into dawn. She was clothed, handled and dressed like other infants, though her soul dwelt in the Divinity; and She was treated as an infant, though She excelled all mortals and even all the angels in wisdom. Her mother did not allow Her to be touched by other hands than her own, but she herself wrapped Her in swaddling clothes: and in this Saint Anne was not hindered by her present state of childbirth; for she was free from the toils and labors, which other mothers usually endure in such circumstances.
So then saint Anne received in her arms Her, who was her Daughter, but at the same time the most exquisite Treasure of all the universe, inferior only to God and superior to all other creatures. With fervent tears of joy she offered this Treasure to his Majesty, saying interiorly "Lord of infinite wisdom and power, Creator of all that exists, this Fruit of my womb, which I have received of thy bounty, I offer to Thee with eternal thanks, for without any merit of mine Thou hast vouchsafed it to me. Dispose Thou of the mother and Child according to thy most holy will and look propitiously down upon our lowliness from thy exalted throne. Be Thou eternally blessed, because Thou hast enriched the world with a Creature so pleasing to thy bounty and because in Her Thou hast prepared a dwelling-place and a tabernacle for the eternal Word (Sap. 9, 8). I tender my congratulations to my holy forefathers and to the holy Prophets, and in them to the whole human race, for this sure pledge of Redemption, which Thou hast given them. But how shall I be able to worthily to treat Her, whom Thou hast given me as a Daughter? I that am not worthy to be her servant? How shall I handle the true ark of the Testament? Give me, O my Lord and King, the necessary enlightenment to know thy will and to execute it according to thy pleasure in the service of my Daughter."
Happy birthday, Mother Mary. Pray for us who are need of your Son's grace.