How do we know that Christian ministers are entrusted with the gospel?

In Paul's letter to the Thessalonians, he asserts that true ministers are those who have been approved and entrusted with the gospel by God. This approval is not based on their personal conduct alone but on their faithful proclamation of God's Word and commitment to serving the church without ulterior motives. Paul emphasizes that they were bold in delivering the message of the gospel, in spite of suffering and opposition, which further verifies their sincerity and commitment to God's calling. The integrity of their message and the evident work of the Holy Spirit among the believers also testify to their divine appointment and credibility as ministers.