396 The Faith of Our Fathers Apostolic teaching was infallible, 65; weapons, 26; missionaries sent by Popes, 115. Apostolicity defined, 38; a note of the true Church, 39; claims of tested, 40, et seq. Articles of Faith — consequences of denial of, 10. Arian heresy and the Church, 53, et seq. Arianism and Protestantism paralleled, 55, et seq. Astolphus, King, threatens Rome, 140. Attila and Pope Leo the Great, 139. Attributes of Christ — objects of Church's teaching, 16. Attributes or Notes of the Church imply infallibility, 65. Authority of the Church derived from God, 65; absence of, causes dissensions, 97; authorized versus private interpretation, 81; of the Book of Machabees, 214. Barbarians attack Rome, 139. Bancroft's History cited, 233. Baptism essential for remission of original sin, 268; necessary for all, 268; must not be delayed, 273; effects, 21; remits all sin, 275; makes us heirs of heaven, 276.