It’s not something that he brought to this world.
But what he brought was powerful and radical enough to slowly and eventually overcome many of the terrible animal-like human traits. Christian societies were the first that got rid of slavery, introduced human rights, democracy etc.
Yes, it took a long time to unravel and it’s not a finished process, but it’s not something that just happened. What feel natural for us today was not natural at all back then.
All critical ethical ideas that modern western civilization is based were either invented or popularized by that guy in some unique and unprecedented way.