"The holy ghost isn't actually a ghost or a spirit," Sam rattles off, hardly even thinking about it. "Not in the way that we use either word in modern English, at least. Most bits of the Bible tend to consider the Holy Spirit more the power of creation. Actually, the Hebrew for the Spirit is ruach ha-kodesh, where ruach means breath or wind and it's postulated that Judaic authority considered the Spirit a way of communication between God and Their creations."