5 By these arguments and references to the sacred Scriptures we frequently overthrew them; but they changed like chameleons, and again shifted their ground, striving to bring upon themselves that sentence, “when the wicked falls into the depth of evils, he despises.” There have been many heresies before them, which, venturing further than they ought, have fallen into folly; but these men by endeavouring in all their cavils to overthrow the Divinity of the Word, have justified the other in comparison of themselves, as approaching nearer to Antichrist.
Wherefore they have been excommunicated and anathematized by the Church. We grieve for their destruction, and especially because, having once been instructed in the doctrines of the Church, they have now sprung away. Yet we are not greatly surprised, for Hymenæus and Philetus did the same, and before them Judas, who followed the Saviour, but afterwards became a traitor and an apostate. And concerning these same persons, we have not been left without instruction; for our Lord has forewarned us; “Take heed lest any man deceive you: for many shall come in My name, saying, I am Christ, and the time draws near, and they shall deceive many: go ye not after them;” while Paul, who was taught these things by our Saviour, wrote that “in the latter times some shall depart from the sound faith, giving heed to seducing spirits and doctrines of devils, which reject the truth.”
Source: Deposition of Arius (New Advent)