In the material world, we imagine merging, or adhesion, as shortening the distance between bodies, and understand separation as moving away from one another. However, the spiritual realm lacks such concepts as time, space, and motion. This is why the equivalence of properties between two spiritual objects draws them closer to one another, and the difference in properties moves them apart.
There can be no adhesion or separation (in contrast to the adhesion or separation in space) because the spiritual object itself takes no place.