Gerhard and Walther

Let us eat and drink, for tomorrow we die, said the Epicureans... However, true Christians turn it around and say: Let us be sober, let’s fast and pray, for tomorrow we die and have to stand before God’s judgment.—Johann Gerhard, Schola Pietatis I:229.

One Christian doctrine that is frequently and vehemently denied states that there is a devil who fiercely and ceaselessly attacks man.—C. F. W. Walther, God Grant It!, p. 249.