While the Church was perfecting her organization, she was
also elaborating her doctrines. Theologians engaged in many controversies upon
such subjects as the connection of Christ with God and the nature of the
Trinity. In order to obtain an authoritative expression of Christian opinion,
councils of the higher clergy were held, at which the opposing views were
debated and a decision was reached. The Council of Nicaea, which condemned
Arianism, formed the first, and one of the most important, of these general
gatherings of the Church. After the Church had once expressed itself on any
matter of Christian belief, it was regarded as unlawful to maintain a contrary
opinion. Those who did so were called heretics, and their teachings, heresies.
The emperor Theodosius, whose severe laws finally shattered the ancient
paganism, devoted even more attention to stamping out heresies among his
Christian subjects. He prohibited meetings of heretics, burned their books, and
threatened them with death if they persisted in their peculiar doctrines.
During his reign a Spanish bishop and six of his partisans were executed for
holding unorthodox beliefs. This was the beginning of the persecutions for
heresy.
WORSHIP
As soon as Christianity had triumphed in the Roman Empire,
thus becoming the religion of the rich and powerful as well as the religion of
the poor and lowly, more attention was devoted to the conduct of worship.
Magnificent church buildings were often erected. Their architects seem to have
followed as models the basilicas, or public halls, which formed so familiar a
sight in Roman cities. Church interiors were adorned with paintings, mosaic
pictures, images of saints and martyrs, and the figure of the cross. Lighted
candles on the altars and the burning of fragrant incense lent an additional
impressiveness to worship. Beautiful prayers and hymns were composed. Some of
the early Christian hymns, such as the Gloria in Excelsis and the Te
Deum Laudamus, are still sung in our churches. Organs did not come into use
until the seventh century, and then only in the West, but church bells,
summoning the worshiper to divine service, early became attached to Christian
edifices.