Hymn Lyrics Search - Name That Hymn

Those are all the lyrics I remember, and it was a stunningly beautiful song that my grandmother showed me.

Here is what I found
Sing Of A Lady
https://www.youtube.com/watch?v=3haQZYEweMI

Let us sing of a maiden, let us sing of a girl
who spoke with an angel, saying yes to the Lord.
Let us sing of a maiden, let us sing of a girl
who bowed to the Spirit and gave life to the Word
So come and sing with me. We'll raise a joyful song
to lead the world from dark to light and turn to right from wrong.
So come and sing with me a hymn of joyful praise 
Ave Maria, Ave Maria, Ave Maria the hope of all our days

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the rest of the lyrics are superimposed over the video