The Preacher is a goblin in the Goblin Temple and preaches to those who follow the Big High War God, Bandos. His name is unknown and he cannot be talked to.
The preacher preaches to praying goblins
You goblins listen!
This is what Big High War God say:
Slay enemies of Big High War God!
Enemies must die!
Not to run from battle!
Cowards must die!
Not to show mercy!
Merciful must die!
Not to doubt Big High War God!
Doubters must die!
Not to make own plans!
Thinkers must die!
In beginning, goblins weak.
Big High War God make us strong!
In beginning, goblins have no commander.
Big High War God send commander!
In time of great war...
He send commander to lead us.
Now we have no commander.
But some day he send new commander!
New commander leads goblins to victory!
Goblins conquer all of world!
Then Big High War God return!