Fundamentally, salvation is very simple. In 1 John 4:14-15 we read:
14 And we have seen and testify that the Father has sent his Son to be the Savior of the world. 15 If anyone acknowledges that Jesus is the Son of God, God lives in him and he in God.[NIV]
This central claim of Christianity is the most controversial: that a man who looked like everyone else and had a body just like everyone else’s that died like everyone else’s, was God. To deny that claim it is to depart from Orthodoxy Christianity as seen by both Calvinists and Arminians. However, its implications call into question some of the core assumptions of Calvinism, for what definition of God permits Jesus to be God?
