for me I think it means we have a live spiritual connection, like a supply of electricity I've plugged into. I have chosen to turn to him for a spiritual relationship that he freely offered me - I can of course say no at any time. But I have chosen to live as he teaches as best as I can, chosen to believe the spiritual realities of Heaven, hell, the Trinity and angels and demons etc. A personal God who actively works in me. Of course this also in turn, effects my body, mind and emotional life too.