Ioannis Vvolphii Tigurini De officio praeconis evangelici oratio, qua D. Pauli 2. Timoth. 2. locus explicatur, Stude teipsum probatum exhibere Deo, operarium non erubescendum, recte secantem sermonem veritatis

...when he commanded the Apostles to go into the whole world, he said, Κηρύξατε τὸ εὐαγγέλιον Preach the Gospel. By this command of Christ, the word κηρύττειν to herald/preach, which is the proper term for preachers and heralds, and the name of the Gospel itself are both contained; by one of these the sum and head of the doctrine is demonstrated, and by the other the method of proposing and explaining that doctrine is shown. Since this matter is so great that no one could encompass it all in thought, let alone express it all in words or perform it in reality, good men will judge that to have spoken on it as much as this time and place allowed, and as much as the words of Paul required, is sufficient for themselves. And although I believe that the criticism of many is to be expected of me because I allow such a small oration on such a great matter to be published, nevertheless, to you, most distinguished men, who both approve of this so highly and ask that it be given to be printed so that it can be shared with friends, I cannot help but grant and dedicate it for the sake of kindness and grace. I do this partly led by the grateful memory of your merits toward me, and partly by the desire to maintain my reputation among you, because I both recognize that I am bound to you by the eternal memory of not a few kindnesses, and I would not want, if I refuse, to fall into odious stubbornness, as if I thought myself to be called upon at an inopportune time or asked in an impudent manner. Rather, I would want this to be persuaded of me by you: even if I cannot illuminate your kindnesses by counting and accumulating them, yet the will to return the favor will never be lacking. Farewell, my dearest friends. Zurich, the day before the Nones of February, 1562.