The nature, extent, and importance, of the duty, binding on the Christian minister, divinely commissioned to bear the warnings of God to men : illustrated in a sermon, preached in Fitchburgh, Massachusetts, on the 27th day of September, 1797, at the ordination of the Rev. Samuel Worcester; and again, by particular request, in Granville, in the state of New-York, on the 4th day of the following October, at the ordination of the Rev. Nathaniel Hall. By Samuel Austin, A.M. Pastor of a church in Worcester. Now published, from the press, in compliance with desire, manifested on both occasions.