God being simultaneously wherever he is, since he is present everywhere. The divine omnipresence is twofold, by nature and by grace.
By nature God is present in all things by essence, knowledge, and power. This is the presence of a cause in the things that share in God's goodness. By his essence, he is substantially in all things, including the created spiritual essences (angels, demons, human souls) as the immediate origin of their existence. by his knowledge, he exercises his wisdom directly in all creation down to the least details. By his power, he operates with divine activity as the First Cause of everything that creatures do.
By grace, God is further present in the souls in whom he dwells as in a temple. Hence the creature is joined, as it were, to God's substance, through the activity of mind and heart, by faith cleaving to the First Truth, and by charity to the First Good. He is therefore present by grace as the known is to the knower and the beloved is to the lover. This presence is more than a cause in an effect. It is the possession of God on earth similar to his being possessed by the angels and saints in heaven.