Was It Necessary for Our Salvation that Jesus be God?

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Advent is the time of year when we think and talk a lot about the incarnation, that event in which God took on human flesh and became one of us in order to save us.

Recently on the Calvary Live call-in show on GraceFM someone called in asking if it is necessary to believe that Jesus was fully God in order to be a Christian. He explained that he believes that Jesus was fully human, but not fully God.

Arianism: A Brief Background

Without knowing the name for it, he described his beliefs, which were basically Arianism: a belief popularized in the early 300’s by a man named Arius, who taught that – contrary to the generally-held Christian belief, Jesus was not fully God in the same way that the Father is God, but that he was a special created being, whom God created in order to bring about salvation for human beings. Arius was afraid that by saying that Jesus was God, Christians were slipping into polytheism, and that in Colossians where it says that Jesus is “the firstborn of all creation” (Colossians 1:15), it means that Jesus was the first creature whom the uncreated Father created.

Arius’ beliefs were condemned as unbiblical and incorrect at the Council of Nicaea, the first ecumenical council of the church, which gave birth to the Nicene Creed, asserting that Jesus was of one substance (ousia) with the Father and that Jesus is “very God of very God”, leaving no ambiguity whatsoever that Christians unanimously believe that Jesus is in fact God.

(For more on Arius, Nicaea and St. Nicholas of Myra, check out: Taking Back the Story of Saint Nicholas)

But still… why is it important that we believe Jesus is God?

Is it just because that’s who Jesus is and who God has revealed him to be (ontological/revelatory reason)?  – OR – was it actually necessary for our salvation that Jesus be God (soteriological reason)?

Nicaea dealt with the ontological and revelatory side of this question, but my caller on the radio show asked the latter question: is there a soteriological reason why Jesus had to be God in order to save us?

My immediate answer was to point him to Romans 8:1-4, which says that Jesus fulfilled all of God’s righteous requirements on our behalf. In other words: Jesus lived the perfect life that I should have lived, and the good news of the gospel is that he then offers his perfect record to me. Jesus, having been the only human not born of the seed of a man – other than Adam – becomes the “new Adam”, who then fully obeys God whereas Adam disobeyed and sinned (see Romans 5:12-21 or listen to Who is Your Champion?)

He then asked, “Couldn’t God have created a perfect being, without a sin nature, in order to do that work of fulfilling God’s righteous requirements on our behalf in order to save us?”

Here’s Why Jesus Had to Be “Very God of Very God” in Order to Save Us:

The Scots Confession of 1560 addressed this issue directly. The answer it gave is that the full reality of Christ’s deity is essential for salvation because salvation must be an act of God, or else it is not salvation. The deity of Christ tells us that the action of Jesus in the incarnation and on the cross is identical with God’s own action.

The deity of Christ tells us that the action of Jesus in the incarnation and on the cross is identical with God’s own action.

Karl Barth explained that the full deity of Christ is essential because it is only God who can forgive sins. He refers to Mark 2:7, ‘who can forgive sins but God alone?’ It is equally necessary for atonement, Barth pointed out, that the one who makes amends for sin is human. 

Salvation, in other words, is an act of God, but an act that must be done from within humanity – thus Jesus had to be fully God and fully man in order to save us.

The whole of our salvation depends on the fact that it is God in Christ who suffers and bears the sin of the world, and reconciles the world to himself.

T.F. Torrance discusses the terrible implications of denying the full deity of Christ:

If the deity of Christ is denied, then the cross becomes a terrible monstrosity. If Jesus Christ is man only and not also God then we lose faith in God, because how could we believe in a God who allows the best man that ever lived to be put to death on the cross? If you put Jesus Christ as a mere man on the cross and put God in Heaven like some distant god imprisoned in his own lonely abstract deity, such a god is monstrously unconcerned with our life as he does not lift a finger to help Jesus.

The validity of our salvation depends on the fact that he who died on the cross under divine judgement is also God the judge, so that he who forgives is also he who judges.

Thanks be to God for what He has done for us by becoming one of us!

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