A celebrated confession of faith drawn up by Luther and Melancthon on behalf of themselves and other ancient reformers, and presented in 1550 to the emperor Charles V, at the diet of Augusta, or Augsburgh, in the name of the evangelic body. This confession contains twenty-eight chapters, of which the greatest part is employed in representing with perspicuity and truth the religious opinions of the Protestants, and the rest in pointing out the errors and abuses that occasioned their separation from the church of Rome. The leading doctrines of this confession are, the true and essential divinity of the Son of God; his substitution, and vicarious sacrifice; and the necessity, freedom, and efficacy of Divine grace. A civil was followed this diet that lasted upwards of twenty years, but which only spread the new opinions, instead of extirpating them.