God is present everywhere, all the time. There is no place where God is not.
God is almighty because He can do and make anything which is good and non-contradictory. Thus, God cannot commit sin because He cannot contradict His infinite goodness. Nor can He violate the principle of non-contradiction, which states that a thing cannot both be and not be at the same time.
God is the Supreme Being. The word supreme means above all others. God is the source of all being. He is above all that exists.