Zen holds

that there is no god outside the universe that created it and created man. God - if I may borrow that word for a moment - the universe and man are one indivisible existence, one total whole. Only THIS - is. Anything and everything that appears to us as an individual entity or phenomenon, whether it be a planet or an atom, a mouse or a man, is but a temporary manifestation of THIS in form; every activity that takes place, whether it be birth or death, loving or eating breakfast, it is but a temporary manifestation of THIS in activity. Each one of us is but a cell, as it were, in the body of the Great Self. Having come into being, this cell performs its functions, and passes away, transformed into another manifestation.

Ruth Fuller Sasaki, Zen: a method for religious awakening