The Magnificat [Latin: magnifies], also called the Canticle of Mary, is recorded in the Gospel of Luke (1:46-55). It is the Virgin Mary's joyous prayer in response to the Angel Gabriel's annunciation to her that she will become the mother of the Son of God. This great hymn forms part of the Church's prayer in the Divine Office (Liturgy of the Hours). When it is recited as part of the Divine Office, it is followed by the Gloria Patri "Glory be". The traditional sung Magnificat is Latin plainchant. One of the hymn's most glorious musical renditions is the version of the Magnificat by J.S. Bach.

Magnificat - English

My soul magnifies the Lord,
and my spirit rejoices in God my Savior;
Because He has regarded the lowliness of His handmaid;
for behold, henceforth all generations shall call me blessed;
Because He who is mighty has done great things for me,
and Holy is His Name;
And His mercy is from generation to generation on those who fear Him.
He has shown might with His arm,
He has scattered the proud in the conceit of their heart.
He has put down the mighty from their thrones,
and has exalted the lowly.
He has filled the hungry with good things,
and the rich he has sent away empty.
He has given help to Israel, His servant, mindful of His mercy -
Even as He spoke to our father -
to Abraham and to his posterity forever.

Glory be to the Father and to the Son and to the Holy Spirit.
As it was in the beginning, is now and ever shall be, world without end. Amen

Magnificat - Latin 

Magnificat anima mea Dominum;
Et exultavit spiritus meus in Deo salutari meo,
Quia respexit humilitatem ancillae suae; 
ecce enim ex hoc beatam me dicent omnes generationes.
Quia fecit mihi magna qui potens est, et sanctum nomen ejus,
Et misericordia ejus a progenie in progenies timentibus eum.
Fecit potentiam brachio suo;
Dispersit superbos mente cordis sui.
Deposuit potentes de sede, et exaltavit humiles.
Esurientes implevit bonis, et divites dimisit inanes.
Sucepit Israel, puerum suum, recordatus misericordiae suae,
Sicut locutus est ad patres nostros, 
Abraham et semeni ejus in saecula.

Gloria Patri, et Filio, et Spiritui Sancto.
Sicut erat in principio, et nunc, et semper, et in saecula saeculorum. Amen.