I thought all main quest titles were related to the chantry?
Yes they are. They're all from the Chant of Light.
"Those who oppose thee
Shall know the wrath of heaven.
Field and forest shall burn,
The seas shall rise and devour them,
The wind shall tear their nations
From the face of the earth,
Lightning shall rain down from the sky,
They shall cry out to their false gods,
And find silence."
~Andraste 7:19
"Blessed are they who stand before
The corrupt and the wicked and do not falter.
Blessed are the peacekeepers, the champions of the just."
~Benedictions 4:10
"And the men of Tevinter heard and raised altars
To the pretender-gods once more,
And in return were given, in hushed whispers,
The secrets of darkest magic."
~Threnodies 5:11
"Then the Maker said:
To you, My second-born, I grant this gift:
In your heart shall burn
An unquenchable flame
All-consuming, and never satisfied."
~Threnodies 5:1-5:8
"Here lies the abyss, the well of all souls.
From these emerald waters doth life begin anew.
Come to me, child, and I shall embrace you.
In my arms lies Eternity."
~Andraste 14:11
"The Old Gods will call to you,
From their ancient prisons they will sing.
Dragons with wicked eyes and wicked hearts,
On blacken'd wings does deceit take flight,
The first of My children, lost to night."
~Silence 3:6, Dissonant Verse
"And So is the Golden City blackened
With each step you take in my Hall.
Marvel at perfection, for it is fleeting.
You have brought Sin to Heaven
And doom upon all the world."
~Threnodies 8.13