In 451, the Fourth Ecumenical Council met in the city of Chalcedon. It condemned the Monophysite heresy, which taught that the human nature in Christ was totally absorbed by the divine nature. Juvenal was among those who condemned the heresy and affirmed the Orthodox doctrine of the union of two natures in Jesus Christ, the divine and the human, without separation and without mixture. When Dioscorus of Alexandria was tried for violation of canonical law, Juvenal voted for his condemnation. The attenders of the council consented to the establishment of the patriarchate of Jerusalem, but when Juvenal returned to his throne, Monophysites drove him from it and installed Theodosius as the patriarch. Theodosius reportedly filled Jerusalem with blood, then raised a military company to punish other rivals in the region like Severianus, Bishop of Scythopolis, whom he brutally executed in 452 or 453 AD. Imperial troops restored Juvenal in 453, and he served in peace until his death in 458.