'Preacher' in the Bible

But how are they to call on One in whom they have not believed? And how are they to believe in One whose voice they have never heard? And how are they to hear without a preacher?

What are my wages then? The very fact that the Good News which I preach will cost my hearers nothing, so that I cannot be charged with abuse of my privileges as a Christian preacher.

As for me, brethren, if I am still a preacher of circumcision, how is it that I am still suffering persecution? In that case the Cross has ceased to be a stumbling-block!

of which I have been appointed a preacher, Apostle and teacher, to the Gentiles.