In Catholic theology, Christ and the Holy Spirit immanently reveal themselves; God the Father only reveals himself immanently vicariously through the Son and Spirit, and the Divine Nature, the Godhead is wholly transcendent and unable to be comprehended.
But Philo, who was a pious Jew, could not accept the un-Jewish, pagan conception of the world and the irreligious attitude which would have been the logical result of his own system; and so he accepted the Stoic doctrine of the immanence of God, which led him to statements opposed to those he had previously made.