I mean, isn't the bad stuff also still "relevant" though? What's the standard there? The Bible also says to treat people terribly, in ways that do seem relevant to modern life. Maybe we don't have literal slaves in the same way, but we accept coercive and underpaid labor conditions for immigrants. There's a part that says to kill homosexuals, and it's not like hate crimes aren't still a reality. Don't you have to ignore the parts you don't like in order to only follow the parts that say to care for others?