In the Fifth Evening Lecture in The Proper Distinction Between Law and Gospel, Dr. C.F.W. Walther says,
"By ascribing to man some share in his own salvation, we rob Christ of all His glory. God has created us without our cooperation, and He wants to save us the same way. We are to thank Him for having created us with a hope of life everlasting. Even so He alone wants to save us. Woe to him who says that he must contribute something towards his own salvation! He deprives Christ of His entire merit. For Jesus is called the Savior, not a helper towards salvation, such as preachers are. Jesus has achieved our entire salvation."