The Formula of Concord commended itself to the hearts and intelligences of Lutherans, and secured a hundred years’ supremacy of orthodoxy, notwithstanding two Christological controversies. Gradually, however, a new dogmatic scholasticism arose, which had the defects as well as the excellences of the mediæval system. The orthodoxy of this school deteriorated, on the one hand, into violent polemic on confessional differences, and, on the other, into undue depreciation of outward forms in favour of a spiritual life and personal piety. These tendencies are represented by the Syncretist and Pietist controversies. § 159.1. =Christological Controversies.= 1. =The Cryptist and Kenotist Controversy= between the Giessen and Tübingen theologians, in A.D. 1619, about Christ’s state of humiliation, led to the publication of many violent treatises down to A.D. 1626. The Kenotists of Giessen, with Mentzer and Feuerborn at their head, assigned the humiliation only to the human nature, and explained it as an actual κένωσις, _i.e._ a complete but voluntary resigning of the omnipresence and omnipotence immanent in His divinity (κτῆσις, but not χρῆσις), yet so that He could have them at His command at any moment, _e.g._ in His miracles. The Cryptists of Tübingen, with Luc. Osiander and Thumm at their head, ascribed humiliation to both natures, and taught that all the while Christ, even _secundum carnem_, was omnipresent and ruled both in heaven and earth, but in a hidden way; the humiliation is no κένωσις, but only a κρύψις. After repeated unsuccessful attempts to bring about a reconciliation, John George, Elector of Saxony, in A.D. 1623, accepted the Kenotic doctrine. But the two parties still continued their strife.[466] 2. =The Lütkemann Controversy= on the humanity of Christ in death was of far less importance. Lütkemann, a professor of philosophy at Rostock, affirmed that in death, because the unity of soul and body was broken, Christ was not true man, and that to deny this was to destroy the reality and the saving power of his death. He held that the incarnation of Christ lasted through death, because the divine nature was connected, not only with the soul, but also with the body. Lütkemann was obliged to quit Rostock, but got an honourable call to Brunswick as superintendent and court preacher, and there died in A.D. 1655. Later Lutherans treated the controversy as a useless logomachy.