What does the Bible say about the role of a gospel preacher?

In 1 Samuel 12, Samuel exemplifies the characteristics of a faithful gospel preacher, mirroring the role of Jesus Christ himself. A preacher is called to serve, as seen in Samuel’s declaration of how he has listened to the people's requests and faithfully served them. This reflects the greater truth of Christ, who, despite being sovereign, took on the form of a servant. The qualifications for pastors are akin to what Christianity demands from all believers—serving others humbly and faithfully, as modeled by Christ (Philippians 2). A true gospel preacher will therefore embody these qualities, guiding the flock towards Christ.