this refers to the belief of many christians that god is beyond and outside the world of space and time
god is eternal and limitless
catholic teaching refers to god's aseity
aseity
the belief in god's self-existence; it is his nature to exist
the clearest expression of this belief is seen in the call of Moses:
Moses asked to know god's name, and the reply was 'I am who I am'. in other words, no human can possibly know god's name, i.e. understand what it means to be god