There are three ways to bring unity between two opposites:

One

Introduce a power that transcends them both, and to which they both utterly surrender their entire being.

Externally, they now seem at peace with one other, because they are both under the influence of the same force.

But they themselves know that they are not truly at peace, and that such peace cannot endure, because their own being is simply ignored.

Two

Find a middle ground where the two meet.

The two are now at peace, but only on that middle ground

The rest of their territory remains apart, distant, without room for the other.

Three

Reach deeper, into the very essence of the two beings, and discover that at this point, in every aspect, they are no more than two expressions of the same one G‑d.