ELI5: Explain Like I'm 5

Non-Chalcedonian Christianity

So, you know that there are different types of Christians, right? One of those types is called "non-chalcedonian Christianity." This means that they believe in Jesus like other Christians, but they have some different ideas about how to describe him.

Most Christians believe that Jesus is both fully God and fully human. It's kind of confusing, but they think that Jesus had two natures at the same time--he was fully God and fully human. But non-chalcedonian Christians don't quite believe this. They think that Jesus only had one nature, which was a combination of God and man. It's still pretty confusing, but the point is that they have a different way of understanding how Jesus was both God and man at the same time.

This difference in belief came about a long time ago, back in the 5th century. There was a big meeting of Christian leaders called the Council of Chalcedon, and they decided on the "official" Christian belief about Jesus having two natures. But not everyone at the meeting agreed with this, and some Christians kept believing in the one-nature idea. Over time, those Christians became known as non-chalcedonian Christians.

So that's the basic idea--non-chalcedonian Christians believe in Jesus, but they have their own way of understanding how he was both God and man at the same time. It's a bit different from what most Christians believe, but that's okay--there's room for different beliefs in the world.