I've been researching some roots reggae lyrics that use the "So High" chorus. By roots, I mean religious Rastafari music.

"Fire (Is the Desire)" by Justin Hinds
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Hinds was raised in the Seventh Day Adventist Church. Hinds is an incredible songwriter known for his use of Jamaican folk sayings and biblical parable. This song was recorded ca. 1978-79

The fire is burning
People are yearning
In this time, In this time, In this time
(Fire is burning)
The fire is so hot you can't get close to it.
(Fire is burning)
The flame is so high that you can't get above it.
(Fire is burning)
The sparks are so wide that you can't get around it.
(Fire is burning).
The heat is so deep you can't under it.
(Fire is burning)

"Stone" by Prince Alla
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Prince Alla lived for a time with Emmanuel Edwards' Bobo Shanti settlement in the Trenchtown slum in Kingston. (ca. 1975-77). Bobo Shanti is a Rastafarian sect/faith that draws on traditions in the Ethiopian Orthodox Church.

I man saw a stone
Just a come to mash down Rome
Dread, dread stone
Just a come to mash down Rome
To mash down Rome
To mash down Rome

They can't run
No, I know that they can't hide
For that stone was so big and it so wide
And it so low, don't you know,
They can't get under it
And it so high, Babylon,
You can't get over it
Get over it
Get over it

Presumedly, the "So High" spiritual was brought to Jamaica by (American)Protestant missionaries.