"Es spricht der Unweisen Mund wohl" ("The mouth of fools doth God confess")[1] is a Lutheran hymn of 1524, with words written by Martin Luther in 1523, paraphrasing Psalm 14.

The text inspired vocal and organ music by composers such as Johann Pachelbel.

As he did with "Ach Gott, vom Himmel sieh darein", Luther expanded the content of the psalm to show the precise situation of the early Reformation as a time of conflict.

[3] The hymn was one of the eight hymns in the first Lutheran hymnal, published 1524 in Nuremberg under the title Etlich Cristlich lider (Some Christian songs), also called Achtliederbuch,[4] which contained four songs by Luther, three by Speratus, and one by Justus Jonas.

[10] The hymn was translated to English as "The mouth of fools doth God confess" and appeared in R. Massie's M. Luther's Spiritual Songs in 1854.