Which preposition to use with christianized

of Occurrences 1%

In consequence of this engagement of the Wesleys, the General deemed it highly proper to visit their venerable and excellent parents at Epworth, not only to confirm their consent, but to communicate to them such information as should interest them strongly in every measure which aimed at the instruction, civilization, and christianizing of the natives of Georgia, from whom he and the new settlers had met so kind a reception.

in Occurrences 1%

This early and very general prevalence of the sentiment of sun-worship is worthy of especial attention on account of the influence that it exercised over the spurious Freemasonry of antiquity, of which I am soon to speak, and which is still felt, although modified and Christianized in our modern system.

Which preposition to use with  christianized