1 John 4:2-3, Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God: And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
The Spirit of God is a Christmas-Spirit, teaching men to confess Advent, the incarnate Christ!