 One of the most important documents for Christian faith outside the Hebrew Bible and New Testament, the  Nicene Creed  of 325, says “We believe in one God, the Father almighty, maker of all things visible and invisible”. The Niceno-Constantinopolitan Creed of 381,  a modification of the older Nicene Creed of 325 that is used by the western Church begins similarly, “We believe in one God, the Father almighty, maker of heaven and earth, of all things that are visible and invisible”.