Soteriologically, the "new birth" is considered the "cornerstone" of the doctrine of salvation. It is described as true repentance from sin and acceptance of the atoning work of Christ by faith, resulting in the redemption from sin and being spiritually born again. Those so affected will find their heart filled by God with peace, have assurance of salvation, and grace. This new birth results in one's conversion from a sinful life unto a life that "brings forth the fruit of the Holy Spirit."