(The). Three books, or parts of three books- one by Theodore of Mopsuestia, one by Theodore of Cyprus, and the third by Ibas, Bishop of Edessa. These books were of a Nestorian bias on the subject of the incarnation and two natures of Christ. The Church took up the controversy warmly, and the dispute continued during the reign of Justinian and the popedom of Vigilius. In 553 the Three Chapters were condemned at the general council of Constantinople.