That's the problem with established Christianity.

The Messiah is promised by the same generations that came up with (or were given) those laws.

The teachings of Jesus (which are very palatable and rarely followed by Christians of any colour) owe their authority to a bunch of writings that most sensible Christians would be appalled by but are frequently selectively pointed to by less sensible Christians.

Which is why the warning on the picture a few pages back makes a lot of sense and should only cause offense to people too attached to the idea of it being the literal word of God.