God: Abraham, I will bless you, I will make you wealthy and prosperous, I will give you supernatural health, I will highly favor you in all things, I will exalt your name before the world, I will give you a son and love your children as I loved you.
Abraham: OK, I believe You are able.
God points His finger at Abraham and says:
“God promised that Abraham would have a son, and that his descendants would become numerous like the stars. He promised that he would make his name great. It was not presented as a promise of salvation or justification as such, and it was not a call to suffering discipleship. It was a promise of healing, prosperity, and glory for Abraham. And Abraham was justified by believing in this promise. The sort of message that false teachers call heresy today has been the foundation for the calling of Moses, the coming of Christ, and the salvation of Christians. Abraham recognized that his own body and his wife’s body were old and barren, but because God said that he would have a son, natural circumstances became irrelevant. He believed that God was able to perform a miracle of healing.
It would have been redundant to believe that God was willing to do what he said. Of course he was willing — he said it. God said, “Abraham, I have made you the father of nations. You are going to have a son. I will make your name great.” Imagine if Abraham had said, “I know you are able, but are you willing to do it?” This would have made no sense, but somehow it has become a pillar in Christian reasoning. “Well…I just said you are going to have a son.” “Right, I heard you. But are you willing to do it?” Should we treat God like a child? It is even more absurd to focus on the will of God for healing given all that the Bible says about the nature of God, the work of Christ, and the ministry of the apostles and the believers. Even the attempt to demonstrate the will of God for healing seems redundant and ridiculous. Abraham believed that God was able to do this thing that was impossible for human power to accomplish. And that was faith.”
Vincent Cheung. “Healing: the Will of Man“