The Doctrine of Regeneration tells Christians that the life they live now will not be as it once was, but will take on the characteristics of regeneration. The Christian is a new creation. The attributes of this pertain to spiritual quality rather than physical substance, however, the evidence of it will become manifest in how the Christian walks through each day and deals with the circumstances of life.
20 I have been crucified with Christ, and it is no longer I who live, but Christ lives in me. And the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself up for me. Galatians 2:20 (LSB)
God’s ways are not man’s ways. His ways, while always right, will appear to the spiritually immature or the unregenerate as bizarre or wrong, or incomprehensible or out-of-step with the ways of the world. Christ’s victory at the Cross was won by laying His life down as an acceptable sacrifice for the sins of His elect. The natural man cannot comprehend this. I know of Christians who still believe that Christ’s crucifixion was a great tragedy. No, while horrible and unjust according to the person of Christ Himself, it was all according to God’s plan and accomplished exactly what the Father willed.