Charles Williams stated that the master idea of Christianity is "coinherence," mutual indwelling. If you want to see this idea concretely displayed, look to the pages of the Book of Kells, that masterpiece of early Christian illumination. Lines interwoven, designs turning in and around on each other, plays of plants, animals, planets, human beings, angels, and saints. The Germans call it Ineinander (one in the other).
For Whom the Bell Tolls
by John Donne
No man is an island,
Entire of itself.
Each is a piece of the continent,
A part of the main.
If a clod be washed away by the sea,
Europe is the less.
As well as if a promontory were.
As well as if a manor of thine own
Or of thine friend's were.
Each man's death diminishes me,
For I am involved in mankind.
Therefore, send not to know
For whom the bell tolls,
It tolls for thee.