Revelation 1:8

 I am the Alpha and

the Omega, the Beginning

and the End. . .

The Son is not simply one as in 

made up of one thing, not many

as in made up of parts, but he

is one as in made up of all

things.  Hence also, to put it

another way, all things are one.

For he is the Circle of all

powers which are enclosed and 

united into one.  On account

of this, the Word is called

"the Alpha and the Omega",

not only does the end become

the beginning in a circle,

it also finishes the circle again,

and thus it does not receive

any separation from the earlier

beginning.  Therefore, to believe

in him and through him is to

become a unity, being continuously

united in him.  But to lack faith

is doubt, separation, and division.

[from Stromateis IV. 25. 156-7

by Clement of Alexandria]