Tertullian, Against Marcion 2.12

If a partnership and conspiracy of goodness and justice cannot tolerate their separation, how can you possibly assert two distinct gods, one good and one just, kept apart? Goodness exists precisely where justice does; from the very beginning the Creator is equally good and just. Both proceeded together on equal terms. His goodness fashioned the world; his justice measured it out, judging that the world should be made from good things because it judged in counsel with goodness. The work of justice is the very pronouncement of separation: light from darkness, day from night, heaven from earth, upper waters from lower waters, the sea's expanse from the dry land's mass, greater luminaries from lesser, the diurnal from the nocturnal, male from female, the tree of the knowledge of death from the tree of life, the world from paradise, aquatic animals from terrestrial ones. Just as goodness conceived all things, so justice distinguished them. All of this was disposed and ordered by judgment. Every position, condition, effect, motion, state, rising, and setting of the individual elements are judgments of the Creator, so that you do not define him as a judge only from the moment evil began, and thus obscure justice by blaming it for evil's cause. For in these ways we demonstrate: justice has come forth together with the author of all goodness, so that it may be reckoned innate to God and natural, not acquired, since it is found in the Lord as the arbiter of his works.