I’m not a Christian, but I believe Jesus was a manifestation of God. I also think the Buddha was too. I think everyone is potentially, but our true natures are obscured by ignorance.
I might be wrong about this, as I’m only a person, and humans are fallible. The only thing I know for sure is other people are also humans and don’t know anything for sure, either, no matter how much certainty they profess. In fact, there’s probably a correlation between certainty and ignorance.