What does the Bible say about the role of Paul as an apostle?

In Titus 1:1-4, Paul identifies himself as a servant of God and an apostle of Jesus Christ. This title reflects his divine calling and responsibility to proclaim the gospel. Paul's apostolic authority is rooted in his encounter with Christ, which is a vital requirement for any true apostle, as he had seen the risen Lord. Moreover, Paul's acknowledgment of being a servant or slave of God signifies his complete commitment and submission to God’s will, revealing the heart of a true minister whose life is devoted to glorifying God rather than seeking personal recognition or pride.