What is confession?

My First Catechism
My First Catechism: Activity Book
p. 68: Confession: What is Confession? / What sins should we confess?
Rodney L. Rathmann (Editor)
Lutheran Catechesis
Lutheran Catechesis: Catechist Edition
p. 241: What is Confession?
Peter C. Bender (Author)
Evangelical Lutheran Hymnary
Evangelical Lutheran Hymnary
#426: Jesus Sinners Doth Receive
Sing the Faith
Sing the Faith: The Small Catechism Set to Music
#49: Confession 1
Concordia Publishing House (Artist)