Matthew Rose, here in First Things:
The alt-right seeks an account of what we are meant to be and serve as a people, invoking race as an emergency replacement for our fraying civic bonds. It is not alone; identity politics on the left is a response to the same erosion of belonging. But race is a modern category, and lacks theological roots. Nation, however, is biblical. In the Book of Acts, St. Paul tells his Gentile listeners, “God has made all the nations [ethnos].” The Bible speaks often of God’s creation, judgment, and redemption of the nations. In Christ there is no Gentile or Jew, yet God calls us into his life not only as individuals but as members of communities for which we are responsible. ... Young men . . . need an account of nationhood that teaches them about their past, without making them fear the future; an account of civic life that opens them to transcendence, rather than closing them to their neighbors.
It was the Pauline synthesis which made the risen Christ the proponent of a universal religion, one which goes into all the world making disciples. The historical Jesus, however, viewed those outside the house of Israel as dogs, and himself as sent only to the lost among his own kind. To imply that that made Jesus somehow closed to transcendence certainly ought to give his worshippers pause, but it shows just how thoroughgoing has been the victory of Paul over Jesus that the horizontal is so matter-of-factly valued as if it were the vertical. This is, in fact, a kind of idolatry.
The alt-right's opposition to Christianity is really opposition to this Paulinist revolution, without which Christianity would no doubt have ceased to exist. But the alt-right understands it as little as Christians understand that they are children of this lesser god.
Meanwhile, the failure of Jesus' coming Kingdom of God is a cautionary tale of humanity's inate capacity for self-deception which could instruct his followers and opponents alike but, because it hasn't so far, probably never will.
North America will be glaciated again, or worse, before that ever happens.
