On the Mysteries (De Mysteriis)

...free from passions? Supplications render the soul fit for the influx of the gods, which also arrives easily of its own accord on account of the divine friendship connecting all things.

On the Wrath of the Gods.

When we turn away from the beneficent care of the gods, as if from the light of the sun, we are immediately in darkness, and God is said to be angry with us. To appease the wrath of the gods, therefore, is to return to them by supplicating. Appeasement of this kind brings no passion to God; on the contrary, it even frees the soul from its previous passions. The gods and divine daemons, when humbly adored and worshiped, repel many evils that would otherwise happen naturally.

On the Necessity and Freedom of the Gods.

It is necessary that the gods be as they are, not by a necessity imposed from without, but by one natural and most excellent to them; and for this reason it is most voluntary, for they would never wish to be otherwise were a choice proposed. Porphyry and many philosophers say that the gods are indeed pure intellects, while daemons are intellects, or participations in intellect, some being animate. But Iamblichus objects that the characteristic nature of daemons is not rightly established in this way. For even souls [are] intellect-