Law and Gospel - Thesis II

Thesis II
"If you wish to be an orthodox teacher, you must present all the articles of faith in accordance with Scripture, yet you must also distinguish Law and Gospel."

"Note this well. When you hear some enthusiast preach, you may say, 'Well, he did preach the truth...' and yet you did not feel satisfied. Here is the key for unlocking this mystery: that particular preacher did not rightly distinguish Law and Gospel, and thus everything went wrong. He preached the truth of the Law where he should have preached the truth of the Gospel, and he offered Gospel truth where he should have presented the Law. Now, anyone following such a preacher will go astray; they will not arrive at the sure foundation of the divine truth; they will not attain the assurance of grace and salvation. This frequently happens when students give sermons. You will hear comforting remarks such as 'It is all by grace,' only to be followed by 'We must do good works,' which are then followed by statements such as 'With our works we cannot gain salvation.' There is no order in such sermons. Nobody understands them - least of all the person who needs one of these two doctrines most."

C.F.W. Walther
(Law and Gospel P38-39)