Homoousian

Homoousian is a big, fancy word that people use to talk about Jesus. It means that Jesus is the same thing as God. When we say Jesus and God are the same thing, we mean that they are made of the same stuff. Just like you and your arm are made of the same stuff. So, homoousian is like saying that Jesus and God are from the same family and share the same genes. This idea has been talked about for a long time by people who believe in Christianity. They believe that Jesus is not just a regular person, but that he is also God. So, when they use the word homoousian, they are saying that Jesus and God are one and the same.