Gerhard and Walther

The reason Christ came was that He might ignite the fire of the love of God [in the hearts of believers].—Johann Gerhard, Schola Pietatis III:101

As soon as the Holy Ghost enters the heart of an individual, he becomes smaller and more modest. He no longer knows anything about himself in which he can boast, and no longer despairs on account of his sins.—C. F. W. Walther, God Grant It!, p. 460.