A few days ago I quoted a great summary passage from Irenaeus, and it’s sad that we are still struggling with the same problems. Of course, few in churches would explicitly affirm two Gods in the Bible, but the way they describe God’s action in the OT and in the NT only focuses on discontinuity. That is, they are functional Marcionites: the God of the OT is mean and angry, but the God of the NT is loving and forgiving. Of course, there is some discontinuity in the vision of God in the OT and the NT. How can there not be when the greatest revelation of God had not become manifest until the NT era? However, Irenaeus rightly responds to an overemphasis on the discontinuity by pointing out the greater continuity: the Creator of the World is also its Savior. He’s worth quoting again:
If He (the Creator) made all things freely, and by His own power, and arranged and finished them, and His will is the substance of all things, then He is discovered to be the one only God who created all things, who alone is Omnipotent, and who is the only Father rounding and forming all things, visible and invisible, such as may be perceived by our senses and such as cannot, heavenly and earthly, “by the word of His power;” and He has fitted and arranged all things by His wisdom, while He contains all things, but He Himself can be contained by no one: He is the Former, He the Builder, He the Discoverer, He the Creator, He the Lord of all; and there is no one besides Him, or above Him.
But there is one only God, the Creator–He who is above every Principality, and Power, and Dominion, and Virtue: He is Father, He is God, He the Founder, He the Maker, He the Creator, who made those things by Himself, that is, through His Word and His Wisdom–heaven and earth, and the seas, and all things that are in them: He is just; He is good; He it is who formed man, who planted paradise, who made the world, who gave rise to the flood, who saved Noah; He is the God of Abraham, and the God of Isaac, and the God of Jacob, the God of the living: He it is whom the law proclaims, whom the prophets preach, whom Christ reveals, whom the apostles make known s to us, and in whom the Church believes. Against Heresies 2.30.9 (ANF)
Thus, Christ’s work of salvation is a fulfillment of the original intention of creation and in God’s covenanting work with the Jews. The same God is working it all out–not merely judgment and then love, or a mistake and then its solution. We see both love and judgment in both the OT and NT.