The Purpose of an Unconditional Subscription

Quoting C. F. W. Walther:

The purpose for which the Church demands a subscription to its Symbols is twofold: a) that the Church may convince itself that its teachers really possess the orthodox understanding of Scripture and the same pure, unadulterated faith as the Church; b) that the Church may bind them with a solemn promise to teach this faith pure and unadulterated or renounce the office of teaching instead of disturbing the Church with their false teaching.

Quoted from Walther's essay titled "Why Should Our Pastors, Teachers and Professors Subscribe Unconditionally to the Symbolical Writings of Our Church," delivered at the Western District Convention in 1858. Printed in the April, 1947 Concordia Theological Monthly.