Origen

“ And in like manner each one of those who are the authors of any evil opinion has become the architect of a certain gate of Hades; but those who co-operate with the teaching of the architect of such things are servants and stewards, who are the bond-servants of the evil doctrine which goes to build up impiety. And though the gates of Hades are many and almost innumerable, no gate of Hades will prevail against the rock or against the church which Christ builds upon it. ”

“ Notwithstanding, these gates have a certain power by which they gain the mastery over some who do not resist and strive against them; but they are overcome by others who, because they do not turn aside from Him who said, “I am the door,” [9] have rased from their soul all the gates of Hades. And this also we must know that as the gates of cities have each their own names, in the same way the gates of Hades might be named after the species of sins ”