Which preposition to use with exhorters

in Occurrences 9%

"ELI WEST, of Concord township, Fayette county, Ohio, formerly of North Carolina, a farmer and an exhorter in the Methodist Protestant church, says, that many years since he went to live with an uncle who owned about fifty negroes.

among Occurrences 1%

In case they had present no one who could read, or the law forbade such an exercise, some exhorter among the slaves would be given an opportunity to address the people, basing his remarks as far as his intelligence allowed him on some memorized portion of the Bible.

at Occurrences 1%

Brandon was the next charge visited, the Pastor being my old friend Rev. R.S. Hayward, whose acquaintance, it will be remembered, I made as an Exhorter at Brothertown.

of Occurrences 1%

I refer to Lewis Fowler, an Exhorter of great promise, but who soon after fell under the withering touch of consumption, and passed on to the better land.

on Occurrences 1%

It was common to have one or two exhorters on the plantation who claimed to be called to do service for God, by teaching their fellow men the principles of religion.

Which preposition to use with  exhorters