Simple version. How do you convert a religion for the governance of people who h

Simple version.
How do you convert a religion for the governance of people who have been slaves for thousands of years into a religion for creating a political organization of germanic warrior tribes who have been sovereign for thousands of years?
Well, you do it dishonestly. 😉
And by forcible conversion.
That turns sovereigns into subjects.
Because of a false god.
Made possibly only because of the mystical quality of writing and the economic condition of older civilizations that have had access to greater trade, because they are proximal to either the major fertile crescent rivers, or the Mediterranean sea?

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