Maybe he or she likes us, or looks upon us as one of their own children, or sees potential in us. This is part of our cosmology and has survived the onslaught of Christianity from Heathen times. It does not require reincarnation. We don't really need it. It's unnecessary, and it clutters up our cosmology with a bunch of New Age crap.
Reincarnation is part of somebody else's worldview.
Don't pick on him cause that is me reincarnated.