What do you think?
We haven't even established that a man, let alone "god incarnate" existed at all. And if he did, whether a story about his death and "crucifixion," written long long after his existence was anything close to true. Even if such a man existed and died in such a way, did he have "commands" for us, and should we actually obey such commands? Why?
I think even saying "we will never have the complete picture of spiritual things as long as we are physical beings" indicates that you are a person enjoying the mythical beliefs that faith delivers about living past death. When people enjoy such mythical beliefs, details like what cave, what shroud, what commands, what wooden post, yadda yadda all become very important. But for those that don't believe in Santa Claus, we don't need to know if Rudolf will be needed this year.