The apostolic constitution was meant to restore the Mother of God to her rightful glory as Mother of God, and Queen of Heaven, Immaculate Woman, New Eve.
Right, well a small look at history
The Immaculate Conception is not new or modern. And I’ll show its Patristic and orginates in both churchs since their was one church at the time, and btw and from very early on. Now the fact is the IC following became overwhelming by the Council of Basil in the 14th. Bought about is first dogmatic constitution. Which btw the Pope woundn’t accept due to the fact its wasn’t a ecumenical council. However, the laity refused to acknowledge this and continued pressing on with the veneration. This intensified though the Saints as Loius DeMontfort and Duns Scotus the Camelite Orders etc and of course the Apparition’s thus “Miracles”.
What in truth finally bought about a Dogmatic statement is do to history and a climatic atmosphere of the period which in truth is no different than todays period with Fatima and the same climatic atmosphere presented by the laity. For in truth the church works from in inside and the outside. However let us look at HIstory and what it states…
First the heresy of Arianism fought to large degree by St Athanasius Pope of Alexandria conlcudes the father and son are are “one”. And of course the Saint dealt with the divinity of the HS. Concluding the God was consubstantial with the Son as was the Holy Spirit, thus the doctrine of the Trinity. So Mary who the plan of God for Salvation was set into motion through Her fiat thus Full of Grace could not have been in a state of sin for the Word to become flesh. And the word became for flesh for the “Redemption of Mankind” thus “original sin”. Of course the other heresy early on which relates to this, was the Apollinarist which in essense which is God “Plus” flesh or God surrounded by Flesh. Which is defined by the Hypostatic Union, fully Human fully Divine. Thus God didn’t simply pass through a Stained Mary untouched and fully Divine, but took on a fully Divine Nature and fully Human Nature.
However as Athanasius continues he explains the Christ/God did not “need” to become fully human, He did not need to change to be exhalted, He took upon Himself the form of “servant” by completely humbling himself as God. He undertook this feat to show man the lesson of how to defeat the human condition. though he had no sin, he suffered and felt and cried as any human and had doubt as we see on the Cross. Undertaking death of the flesh for “redemption” this did not happen against the Glory of the Godhead, but to the Glory of the Godhead, and God the Father proclaimed, this is my Son, whom I AM well pleased. Thus taken Flesh of the Virgin Mary becomes the language of Devotion. Mary is the gurantee of the true Humanity of Christ
Commemoration of Mary or MNEME {Greek} dates to early 5AD Sunday after X-Mass festival to Honor Mary. Again Athanasius refers to this date in His awareness of the Marys death or dormition. Thus her entry into Heaven and later the Assumptiom. Here again early on we see Marys part in the History of Salvation. Thus the Commemoration of Mary or "Chreia- a givin fact of history and salvation Mneme- a given fact of existed observation was a simple fact a life very early in the church. Christ being God was promoted back to God after performing on erath the mission the mission for which he had been sent. Man was Dead in Original Sin thus redemption was the purpose of the passion.
Iranaeus 130-200 Just as through a Virgin who disobeyed {Eve} Mankind was Stricken, Fell and Died, so to was it through a VirginMary} who obeyed the Word of God, mankind was restored to life. Christ came back to seek the lost sheep, and its was mankind that was lost. Just as Adam had necessarily to be absorbed in Christ, that mortality be absorbed in immortality, Eve had necessarily to be absorbed in Mary. Virginal Obedience distroyed Virginal Disobedience.
St. Gregory of Nyssa Death- 386 The gift of Him was pronounced by Him who see’s the secrets of a man to be greater than any prophets “John the Baptist”. Christ said “No Mothers Son”… “never has there appeared of earth a Mothers Son greater than John the Baptist”. However, one Mother Daughter was Greater than any Mothers Son or Daughter, namely Mary, the Mother of God, Mary without Stain. Gregory spoke on Eastern Christianity of the entire dispensation “oikonomia” of the Salvation of the World in its fallen state of Original Sin.
Devotion to Mary found ist Supreme expression in the Byzantine Christianity, “then” went on to exert influence in the Western Church. For example with fathers like Ambrose of Milan. Divine Qualities was indeed the right words for Her as Theotokos, it is ultimate significance as is every Heavenly promise, and could not be fully acheived by anyone here on Earth. Mary is positive proof that it could be truly achieved. Truly through not fully, and in this world Her portrayal in Icons is eveidence of the fact of this, as was the “Magnificant” sung at the Morning Office of the Greek Church. Those of whom the Word of God came was pre-eminently true of Mary.
Most of the venue for the development of both devotion and doctrine of the Virgin Mary originates in the Christian East, Syriac, Coptic, Aremenian and Greek.
Mary was Immaculately Conceived because what Nature had not given Her, the Grace of God Accomplished in Her. It was in Marys case alone the method of Redemption of Original Sin by preservation was judged the most fitting, as Mary was Full of Grace before being overshadowed by the Holy Spirit. Therefor Her “restoration” was not an act of suppling what had been lost by Original Sin, but was an act in increasing by God what Mary “already” had…Full of Grace and a known from past/present/future by I AM.
Peace