G-d versus the G-d of Abraham, Yitschak, Yaakov.
Tehilim, the first book, versus all that came after.
Moshiach ben David versus Moshiach ben Yosef.
The female force versus the male force.
The real right versus the real left.
The full truth versus a partial incomplete truth.
The truth of the Geula versus the Halacha of the Galut.
