The Emperor had come to Khur personally with Malcador the Sigillite after ordering the Ultramarines to destroy the Khurian city of Monarchia where the Emperor was worshipped as a God as a result of the teachings of the Word Bearers. He made his displeasure known to Lorgar about the Word Bearers spreading the religion of Emperor-worship to every world they brought into the Imperium, in direct contravention of the rationalist, atheist philosophy of the Imperial Truth. The Emperor forced the entire Legion to kneel against their will through the use of his psychic might and then explained that they were the only Astartes Legion to have failed his purpose on the Great Crusade. After this humiliation Lorgar, on the advice of his First Captain Kor Phaeron and the Word Bearers First Chaplain Erebu