A "revival preacher" refers to a religious individual who gives passionate and enthusiastic speeches or sermons aimed at spurring religious or spiritual rejuvenation among a group of people. Full definition
In a short time he was one of the greatest revival preachers in the nation. (religion-online.org)
This is a listen where the tent revival preacher shouts the good news to you (and I do mean «shouts»). (audible.com)
She ranges from popular (and deserving) scapegoat Charles Finney whose preoccupation with individual conversions completely removed from the life of the Church led to many of evangelicalism's worst contemporary excesses, to revival preacher George Whitefield, to the much more obscure theologian John Nevin. (firstthings.com)