Christianity By shawnagronbach 126 John begins ministry 26 B.C 130 Founded in 30 A.D 140 Jesus is born 4 B.C 151 First and Second Thessalonians written 51 B.C 325 Council of Nicea 325 B.C 451 Council of Chalcedon 451 B.C Dec 13, 1054 Great Schism between East and West 1054 Dec 13, 1415 Council of Constance. Martyrdom of Jan Hus. 1415 Dec 13, 1534 Henry VIII's Act of Supremacy 1534 B.C Mar 2, 2022 Jews and astrologers are expelled from Rome 19 B.C Mar 2, 2022 Christianity made official religion of Roman Empire 380