Gerhard and Walther

However, not everyone in the Christian Church is a prophet or teacher (1 Cor. 1:29). But rather God has designated only certain ones as shepherds and teachers (Eph 4:11, 12), in order that the saints receive the work of the ministry by which the body of Christ may be built up.—Johann Gerhard, Schola Pietatis III:420.

In short, the end of the true battle of the flesh and spirit is an advance in sanctification.—C. F. W. Walther, God Grant It!, p. 717.