In a letter to Nikolaus von Amsdorf, Luther objected to Erasmus’ Catechism and called Erasmus a "viper," "liar," and "the very mouth and organ of Satan."
Dalam suratnya kepada Nikolaus von Amsdorf, Luther menolak katekismus karya Erasmus dan menyebut Erasmus sebagai "ular berbisa", "pembohong", serta "benar-benar mulut dan organ Setan".