It happened on the seventh day, that they said to Samson's wife, Entice your husband, that he may declare to us the riddle, lest we burn you and your father's house with fire: have you called us to impoverish us? is it not [so]?
This killing of thirty Philistines, according to Keil, should not be understood merely as carnal vengeance on the part of Samson.  "This act is described as the operation of the Holy Spirit which came upon Samson, because it showed to the Philistines the superior power of the servants of Jehovah.  It was not carnal revenge that impelled Samson to the deed, because it was not until the deed was done that his anger was kindled. Even then, his anger was not against the Philistines, but against his wife."[16]