An epistle in the New Testament, of which Judas, the brother of James, was the author; written to some unknown community in the primitive Church, in which a spirit of antinomian libertinism had arisen, and the members of which are denounced as denying the sovereign authority of the Church's Head by the practical disobedience and scorn of the laws of His kingdom. For the drift and modern uses of this epistle see Ruskin's "Fors Clavigera," chaps. lxvi. and lxvii., where it is shown that the enemies of the faith in Jude's day are its real enemies in ours.