Lactantius

Let us come to the philosophers, whose authority is of greater weight, and their judgment more to be relied on, because they are believed to have paid attention, not to matters of fiction, but to the investigation of the truth.

There is no one, who possesses intelligence and uses reflection, who does not understand that it is one Being who both created all things and governs them with the same energy by which He created them.

For if God is a title of the highest power, He must be incorruptible, perfect, incapable of suffering, and subject to no other being; therefore they are not gods whom necessity compels to obey the one greatest God.