Christ's death was needed for our salvation; but it was not to appease an angry Father.
There are several theories in the Christian world about how Jesus Christ saved us from sin and reconciled us to God. Traditional Christianity teaches that the human race had turned away from God and God was angry and ready to destroy the human race. According to this view, Jesus interceded and offered the sacrifice of Himself, to die, to appease the wrath of the Father. This teaches that we are saved by acknowledging that Jesus, by dying on the cross, took upon Himself all the sins of the human race, and by a confession of belief in His sacrifice all of our sins are washed away and we are saved - made acceptable to God and able to enter into heaven. This is why an emphasis on a personal relationship with Jesus Christ is stressed by traditional Christian theology. It is, in their eyes, the way, and the only way, to heaven.
New Christianity teaches that God saved the human race by coming on earth, but He didn’t come merely to die. He came to restore freedom to human beings so we could again be free to choose. He came so that we would have a clear understanding of who God is, and what He asks of us. Before the Lord came on earth, the influence of hell had risen to such a level that it was essentially choking off the life from God with the human race. It was like a completely cloudy and polluted atmosphere which needed to be purified. The Lord cleared the way by taking on the attacks of the hells with His vulnerable humanity, and by His own inner strength putting them under lock and key so that they didn’t over-extend their influence and cause an imbalance. The final battle was the one on the cross – it was not the only battle. When Jesus proclaimed on the cross, "It is finished," He was declaring that all the work He came to do against the hells was complete. On Easter morning His body was no longer in the tomb because all that was human was unified with the Divine, and made Divine.