And to understand that, here is an account of his writings or his beliefs. So this is Arius of Alexandria. "'If the Father begat the Son, "'he that was begotten had a beginning of existence. "'And from this it is evident "'that there was a time when the Son was not. "'It therefore necessarily follows "'that he, the Son, had his substance from nothing.'" So he's drawing a distinction between the essence of the Father and the Son manifested as Jesus Christ. Now, this is very controversial because even his own bishop in Alexandria viewed the Father and the Son to be of the same substance.