The Six Books of Proclus on the Theology of Plato, Volume 2

Every God is a beneficent unity or an unific (ενοποιος) goodness; and each, so far as a God, possesses this hyparxis. The first God, however, is simply good, and simply one. But each posterior to the first, is a certain goodness, and a certain unity.

For the divine peculiarity distinguishes the unities and goodnesses of the Gods, so that each according to a certain peculiarity of goodness, such as that of perfecting, or connectedly-containing, or defending, benefits all things. For each of these is a certain good, but not every good. But the first God pre-establishes a unical cause. Hence, that is the good, as giving subsistence to all goodness. For all the hyparxes of the Gods, are not together equal to the one; so great a transcendency is the first God allotted with respect to the multitude of the Gods.