Tertullian

And so in the passage where he says: "I am not ashamed of the gospel (of Christ): for it is the power of god unto salvation to every one that beheveth; to the Jew first, and also to the Greek; for therein is the righteousness of God revealed from faith to faith," he undoubtedly ascribes both the gospel and salvation to Him whom (in accordance with our heretic's own distinction) I have called the just God, not the good one.