What does 1 Samuel 6:21 mean?

They sent messengers to the people of Kiriath Jearim, saying, 'The Philistines have sent back the chest of the Lord. Come and take it up to your town.' 1 Samuel 6:21 - Modern Text Bible

(Beth Shemesh asks another town to take responsibility for the Ark, feeling unworthy or afraid to keep it themselves.)