Gerhard and Walther

So then, we rightly now should also do the will of God in the same manner here upon earth as we sing and proclaim His praise. Just as God the Lord never ceases to do good for us, so also we should never cease to thank Him.—Johann Gerhard, Schola Pietatis III:356.

A person who does know if he has true faith and stands in grace with God is certainly in a miserable state…. Conversely, there is no one more fortunate than the one who knows he stands in grace before God. With joy he can lie down at night, for he knows he is placing himself in the arms of his God, who appoints His angels to watch over him.—C. F. W. Walther, God Grant It!, p. 659, 660.