The following is an extract of Bullinger’s letter to Bonifacius Amerbach dated 14 March 1545:
“He (ie Luther) has ranged and raved in public writings against the living and the dead to such an extent that we cannot conceal it. We respond, however, modestly, I imagine, for these very good men and especially for the church for which we are ministers, defending our integrity and that of others in a forthright manner.”
In his Wahrhaftes Bekenntnis of 1545 Bullinger described Luther’s Brief Confession in the following way:
“This book is so full of devilish unchristian insults, lewd filth, impure speech, anger roguishness, rage, and fury that all who read it … must wonder that such an aged, quite experienced, and well respected man should write so crudely before everyone.”
At the end of Wahrhaftes Bekenntnis Bullinger appended Luther’s Kurzesbekenntnis or Brief Confession for comparison to indicate his willingness of his work to be openly inspected and compared to that of Luther’s.