'will' after 'if'

Please tell me why in this sentence from the Bible, there is: ,will’’ after ,if’’:
,And he said to him, All these things will I give you, if you will go down on your face and give me worship.’’

I would write the above sentence this way:
,And he said to him , All these things I will give you, if you go down on your face and give me worship’’.-is it correct?

And why there is replacement ,will’’ with ,if;’’, like in the question:, All these things will I give you’’, and not: , All these things I will give you’’?

Hi,

This use of ‘will’ goes back to the idea of ‘wiiing’- if you are willing. The inversion of ‘I will’ is just a dramatic device.

Alan