How is Jesus all-God and all-man? Did Jesus exist before he was born? Why do we celebrate His birth? - RADIUS Conversations

Russell talks about Jesus' humanity - how most historians and people believe he was a real historical person, but how we believe he is also divine. What should we believe about Jesus as far as His divinity and his humanity? Why does Jesus have to be all-God and all-man? Russell walks through some examples in scripture where we see Jesus having divine attributes. And he answers the question, "How can we know for sure he was who he said he was: God?"