EzAad:
An 'activity of God' is not necessarily a creative act(ivity). When God Speaks He is not per se creating something, is He? He speaks, which is 'action', but He does not create: He 'bears' His Word, before all times, and that Word is also divine, because of its origin ' from eternity'.

Medini:
You are still missing the point. If the act (whether eternal or temporal, whether creative or not) is completely free, then it is ex-nihilo, as I have explained, and cannot be G-d, unless your "G-d" is ex-nihilo, i.e., existentially dependent in the most fundamental way. If the act is not completely free, then it is inherent to G-d, and your "G-d" is essentially dependent, requiring that act in His very essence. In either case, you are left with either an act that is not and can not be G-d or with a "G-d" that is finite, not Infinite in the proper sense of that term.