The judgment of the sheep and the goats in Matthew 25:31-46 is a good test case for how New Testament eschatology works. It is usually read as an account of a final universal judgment, on the assumption that we are still waiting for the Son of Man to come on the clouds of heaven at the end of history.
It is a traditional perspective, deeply embedded in the iconography of Christendom. The judgment scene that forms the third part of the stunning Redemption Triptych (1455-59) by Vrancke van der Stockt, for example, has Christ seated above the clouds of heaven with a couple of angels. In the arch that frames him are scenes drawn from this passage.