How do we know that gospel preachers have a mandate from God?

A gospel preacher's mandate from God is evident through their distinct characteristics and relentless devotion to the gospel. This mandate empowers them to remain resolute in their calling, unaffected by external pressures or distractions. Just as biblical figures like Moses and John the Baptist demonstrated boldness and conviction in their God-given roles, true gospel preachers exhibit a similar commitment, knowing they are messengers of the Omnipotent God. Their lives will reflect an unwavering focus on their divine purpose, distinguishing them as faithful servants.