That's one of the reasons I have such abiding respect for the Law as given to the nation of Israel.
"An eye for an eye ... "
I know. Owning slaves and beating them to death is ok as long as they suffer a day or so, raping a girl is ok, but you have to pay her dad and then marry her, selling your daughter a slave for six years is perfectly fine, a man with any deformity was barred from the priesthood.... yeah, that law was awesome.
He sent Christ. Before Christ, he sent prophets. In other lands there are people teaching the same messages of peace and non-violence and mercy, to no avail.
To be fair, though, other religions and people were teaching the exact same things Jesus was teaching thousands of years before he showed up, so it's not like he was teaching anything new, and there's just as much murder, death, rape and war in the world as there always was, so it's not like he made a particular difference.