How do we know that the call to preach the gospel is true?

The truth of the call to preach the gospel is not simply based on the preacher's abilities but on the evidence of God's work through their ministry. When the gospel is preached faithfully, it has the power to bless believers, draw the elect, and instruct in truth. This underscores that genuine ministry is rooted in God’s strength rather than human skill. As Paul wrote, 'woe to me if I do not preach the gospel,' marking the urgency and necessity of this calling, which is confirmed through its fruits in the lives of those who hear and respond to it.