"The Almighty has done great things for me"
"My soul proclaims the greatness of the Lord". But how can you magnify him? Could you maybe make greater the one whose greatness is unlimited? "Great is the Lord and worthy of high praise; God's grandeur is beyond understanding" (Ps 144,3). He is great, and so great that nothing else can bear comparison with him nor may his greatness be measured. In what way then do you magnify him, since you do not make him greater than what he is?
You magnify him by praising him. You magnify him for, in the darkness of this world, you show the glory of God, brighter than the sun, more beautiful than the moon, more perfumed than a rose, whiter than snow. You magnify him not because you add to his greatness, that is beyond measure, but because, in the darkness of this world, you bring the light of the true God...You magnify him as you are raised to such a high dignity that you receive grace in fullness (Lk 1,28), that you earn the visit of the Holy Spirit and that, having become Mother of God, while remaining an inviolate virgin, you give birth to a Savior for the world that dies.
How may we explain this? By the fact that the Lord is with you (Lk 1,28), the Lord who turned his gifts into your merits. This is why it is said that you magnify him: because you yourself are magnified in Him and by Him. Therefore your soul magnifies the Lord only in the sense that you yourself are magnified by Him...for you are the receptacle of the Word, the storeroom for the new wine that inebriates the sobriety of the faithful. You are the Mother of God"