Found this quote online. Changed one word, substituted ‘disciple’ for ‘pastor’.
“To pursue ministry but not having a passion for the gospel and fulfilling the Great Commission is like pursuing medicine, but not liking patients. I suppose you can manage along, but you will lack fruitfulness and joy. Most troubling of all, you will hinder God’s divine plan for reaching the world for Christ.
Ministry work is gospel work. A love for the lost, and a desire to see them come to know Christ, will be forward propulsion for your ministry. Don’t embark on ministry without a love for the gospel and the Great Commission. It’s the one passion every disciple must have.”