Gerhard and Walther

Indeed, God the Lord has especially established the holy pastoral ministry for the primary purpose that through the means of the same people may be directed to eternal salvation. Consequently, the holy Apostle requires of each teacher that he should be a capable instructor.—Johann Gerhard, Schola Pietatis III:422.

Oh, may each of us be frightened out of the shameful service of mammon! Sad is the time of service, and terrible is the wage. Here on earth, it deceives man out of rest and peace of heart, and there in heaven, he will lose God, his soul, and his salvation.—C. F. W Walther, God Grant It!, p. 725.