It is for the complainer's relief, not for God's information.
Although Achan was the only offender, he was probably far from being the only complainer on that occasion.
I see that you think you have effectually disposed of all complaint by challenging the complainer to suggest a remedy.
Chamillart searched for the document, found it, and saw that the complainer was right.
"Together we make sweetest harmony," returned the bell next the complainer.