Aeneas describes Hades:
A massive gate
With adamantine pillars faced the stream,
So strong no force of men or gods in way
May even avail to crack and bring it down.
-Aeneid, Book VI, lines 741-44
Yet Jesus tells Peter,
And I tell you, you are Peter, on on this rock I will build my church, and the gates of hell shall not prevail against it.
Though no men or gods could tear down the adamantine gates of hell, Yahweh did.
Great is He, and worthy to be praised!