The LORD's hand1 was heavy upon the people of Ashdod and its vicinity; he brought devastation2 upon them and afflicted them with tumors.3
References for 1 Samuel 5:6
When the men of Ashdod saw what was happening, they said, "The ark of the god of Israel must not stay here with us, because his hand is heavy upon us and upon Dagon our god."
So they called together all the rulers4 of the Philistines and asked them, "What shall we do with the ark of the god of Israel?" They answered, "Have the ark of the god of Israel moved to Gath.5" So they moved the ark of the God of Israel.
References for 1 Samuel 5:8