What sermon preached by Gilbert Tennent exposed the damage done by the preaching of unconverted ministers?

Gilbert Tennent preached the sermon "The Danger of an Unconverted Ministry" in 1740, which criticized ministers who lacked a personal experience of conversion. Tennent argued that such ministers were unfit to preach effectively and that their lack of spiritual authenticity could lead congregants astray. This sermon contributed to the religious revival known as the First Great Awakening in America.