It may be that the superscription of this psalm is not authentic, and that the reference is either to some other passage in David's life, or in the life of some other psalmist, when he was especially exposed to the ravings of a murderous and calumnious spirit, and in the midst of unscrupulous enemies thirsting for his life. The psalm is eminently fitted to express the feelings and experiences of the Church of Christ in times of bitter persecution. For calumny has usually been the right-hand instrument of the persecutor. To justify himself, he has found it necessary to denounce his victim. Erroneous opinions, it is instinctively felt, are no such offence as to warrant the wholesale spoliation and murder which vehement persecution calls for. Crimes of a horrible description are laid to the charge of the persecuted. And even where the sword of persecution in its naked form is not employed, but opposition and hatred vent themselves on the more active servants of God in venomous attacks and offensive letters, it is not counted enough to denounce their opinions. They must be charged with meanness, and double dealing, and vile plots and schemes to compass their ends. They are spoken of (as St. Paul and his companions were) as the offscourings of the earth, creatures only to be hunted out of sight and spoiled of all influence. Happy they who can bear all in the Psalmist's tranquil and truthful spirit; and can sum up their feelings like him--"I will sing of Thy power; yea, I will sing aloud of Thy mercy in the morning; for Thou hast been my defence and refuge in the day of my trouble."