“What sanctifies the apostles, what makes the ministry holy, is not the men who do it, but the Word of truth they speak. Remember that when you are disappointed by the church, by your fellow Christians, by your pastors, by me. Sooner or later I will do or say something that disappoints you. And you will do the same to each other. But what makes anything holy, whether it is Holy Baptism, Holy Communion, Holy Absolution, Holy Church, or Holy Ministry, is the Word of Jesus, the Holy One who shed His blood for the cleansing and forgiveness of all.”
The entire sermon is here.