You have to deliver your Lord's errand as he enables you, and if this be done, you are responsible to no one but your heavenly Master, who is no harsh judge. You do not enter the pulpit to shine as an orator, or to gratify the predilections of your audience; you are the messenger of heaven and not the servant of men. Remember the words of the Lord to Jeremiah, and be afraid to be afraid. 'Thou therefore gird up thy loins and arise, and speak unto them all that I command thee: be not dismayed at their faces, lest I confound thee before them' (Jer. 1:17). Trust in the Holy Spirit's present help, and the fear of man which bringeth a snare will depart from you.-- Charles Haddon Spurgeon, Lectures to My Students, 175.
It seems appropriate to recount here that Jeremiah suffered many significant hardships as a prophet of the Most High God.