Arianism claims that Jesus is “the son of God”, but he is inferior to “God the Father”, as he is usually understood as “God’s first creative act”. Then this spiritual entity was sent to earth, where he “became flesh” in the “incarnation”.
I’m not a Trinitarian myself, but it does include words like “human nature” and “hypostatic union” to describe how Jesus can be a “real human”, while “consubstantially” existing as something much different than a human.
According to Arianism, in what way is Jesus human? Was he a spiritual entity cloaked in human biology, or would they agree with the Trinitarian idea of a hypostatic union?