16 Horsepower and Wovenhand
Pretty much anything David Eugene Edwards touches is laced with religious ideology and allusion, however it lacks the proselytizing nature that you're going to be saturated in when you begin this little experiment of yours. He seems to get how to marry his love of music with his love of Christianity and it can be very inspiring, reminding you that despite how much groups like the Westboro Baptist Church have corrupted the popular image of the religion, it is one that, at it's core teaches peace and love for others.
I'll leave you with the lyrics to one of my favorite 16 Horsepower songs as an example of what to expect.
Spoiler for Poor Mouth lyrics:
Is anything as lovely to me as the truth in love
I'll take it over freedom any day
It brings me ever an' this time to my knees
An on my knees I run away
Yes, I know your sticks an' stones they
They will easily break these bones an'
An' all my words come back to haunt me
I will put my strength into
The things left standing
I am hoarse with wild eyes
No debts outstanding
My hands are yours, my brother
You can take my coat as well
My eyes are yours, sister
An my heart, an my heart
In which He dwells
Heard the voice of my Master callin' me
From deep in the hollow
Said that I must follow Him there, yeah
Is any place darker for me
With all them wolves about
Well, it's a poor mouth that I wear
My hands are yours, my brother
You can take my coat as well
My eyes are yours, sister
An' my heart, an' my heart
In which He dwells
In which He dwells
Livin' me from hand to poor mouth
You an' me an' our Secret South, oh Lord
I said livin' me from hand to poor mouth